Title ĐGNL 2025 - Week 4 - Modals (KEYS).pdf ✅

A. must have apologized B. should have apologized C. can't apologize 22. There was a noise that came from the bathroom. It _____ the cat sneaking through the door. A. should have been B. must have been C. needn't have been 23. I'm sorry. I _____ in touch with him. I couldn't reach him. A. couldn’t get B. must have got C. could have got 24. The letter _____ by now. I sent it 4 days ago. A. must have arrived B. needn't have arrived C. shouldn't have arrived 25. You _____ him. He’s not here. He left for the US last month. A. can’t have seen B. mustn't have seen C. might have seen 26. I _____ left my wallet in the restaurant. I paid for the taxi home afterwards. A. must have B. could have C. can't have 27. Where's Clare? Her bag's here and her computer's still on so she _____ gone home. A. must have B. might have C. can't have 28. I can't remember my password! But I _____ written it in my notebook as sometimes I do that. A. must have B. may have C. couldn't have 29. He wasn't answering the phone before. Maybe he went to the shop or he _____ been in the shower. A. may not have B. might have C. couldn't have 30. Sorry, I don't know if she's here or not. She was feeling ill so she _____ gone home. A. should have B. could have C. can't have 31. She _____ cleaned the whole house on her own in two hours. She must have had some help. A. must have B. would have C. can't have 32. Wow! Have you finished all that already? You _____ been hungry! A. must have B. may have C. can't have 33. He _____ known about it when I saw him. I'm sure he would have told me. A. must not have B. might have C. couldn't have 34. Oh, great! His car's here. He _____ come home earlier than planned. A. must have B. might have C. can't have 35. He _____ gone to Russia. He didn't have a passport. A. would have B. should have C. couldn't have Exercise 2. Find the errors in these sentences. 1. There were no shops open yesterday. Perhaps the people couldn't have been on holiday. => could 2. You must have see her, surely! She was standing right in front of you. => seen 3. It's so nice of you to write. You really didn’t need have to. => have / need 4. 'Did you know that Barry works every weekend?' ''Really? That can not be healthy.' => cannot 5. I would give you a lift to the station if you want. => will 6. She shouldn't be ignored her friend's advice. => have 7. He can does very difficult sums in his head. => do 8. You ought drive more slowly when the roads are wet. => to drive 9. You mustn’t to be extravagant when you are still young. => be 10. You would go to the dentist if you have a toothache. => should 11. She cans play three instruments when she was ten. => could 12. When I was at school, we must stand up whenever a teacher came into the room. => had to 13. You don't have get rich right now. => to get
14. We could had checked the weather forecast before leaving, but we didn’t. => have 15. We mustn’t have had to bring our own snacks to the movie because they provided free popcorn. => didn’t have to / didn’t need to III. BÀI TẬP MỞ RỘNG Exercise 1. Match the sentences to make fifteen short conversations. 1. What time does their flight get in? a. Yes, please. That would be lovely. 2. Can you see our train on the departures board? b. Yes, of course. Sorry. 3. Where are Leslie and Theresa? They're nearly an hour late.' c. The traffic's pretty bad. They could have got stuck in a jam. 4. Did Greg tell you – he was in the bank when it got robbed?' d. Well, it can't have gone far. Let's look in the garden. 5. I can't find the tortoise anywhere. Can you help me find it? e. No, you couldn't have heard her correctly. Thirteen, maybe, but not 30 years. 6. I can't find my wallet anywhere. I'm afraid it's been stolen. f. Thank you, yes. It is rather heavy! 7. Margot told me that she's been married for 30 years. g. No. I'm afraid it might have been cancelled. 8. Can I carry your bag for you? h. Maybe. When could you give it back? 9. Will you be quiet, please? i. Yes, he did. He must have been terrified! 10. Would you help me with my homework? j. Sure. What do you want to do? 11. Could you lend me 50 pounds? k. No, that's OK. I'll get a taxi. 12. Would you like to go out tonight? l. Are you sure? You might have left it at home. 13. Shall I meet you at the airport? m. In a while. It's too hot in here. 14. Can you shut that window? n. 9.20. They should have landed by now. 15. Would you like a cup of tea? o. No problem. What is it? 1 – n 2 – g 3 – c 4 – i 5 – d 6 – l 7 – e 8 – f 9 – b 10 – o 11 – h 12 – j 13 – k 14 – m 15 - a Exercise 2. Use two words – 'can'/'can't'/'could'/'couldn't' and an infinitive – to complete each sentence. play see taste can can't swim read find could speak smell can't couldn't can couldn't could 1. Rob can speak Polish really well. He sounds like a native speaker. 2. When I was a girl, I could swim 10 kilometres. 3. The police searched the whole village for the criminal, but they couldn’t find him. 4. Are you sure you put sugar in my tea? I honestly can’t taste it! 5. My great-grandfather was a very clever man but he couldn’t read or write. 6. Did you remember to turn off the cooker? I can smell something burning. 7. Tim's a big rugby fan but he can’t play anymore. He's too old. 8. The children could see that the teacher was very angry. Exercise 3. Fill in the blanks with the correct modals. 1. I (may not/can) arrange the flowers for the bouquet. 2. (May/Might) I borrow this pen from you? 3. The teacher (might/need) ask you to bring the homework.
4. According to the weather forecast, it (may/cannot) snow heavily tomorrow. 5. Raj hasn’t studied well. He (might/shall) fail his exam. 6. You (may/must) follow the traffic rules. 7. It (needn’t/must) be difficult to live amidst war. 8. My mother (will/couldn’t) scold me if I don’t go back on time. 9. We (ought to/mustn’t) take care of our parents. 10. I (shall/needn’t) visit the local grocery store soon. 11. You (should/ought) be punctual. 12. One (mustn’t/ought to) repay all their debts. 13. (Could/Should) you show me the road to the market? 14. The child (must/might) be taken to hospital immediately. 15. (Shall/Will) you have hot chocolate? Exercise 4. Rewrite the sentences using the modal verbs in brackets. 1. It’s possible that Jane will visit Switzerland next year. (could)  Jane could visit Switzerland next year. 2. I’m thinking about taking Spanish lessons. (may)  I may take Spanish lessons. 3. I’m sure they’ll be home by now. (must)  They must be home by now. 4. James definitely isn’t eighteen yet! (can’t)  James can’t be eighteen yet. 5. It’s possible the weather will be sunny tomorrow. (might)  The weather might be sunny tomorrow. 6. I’m sure that Mrs Smith didn’t leave home. (can’t)  Mrs Smith can’t have left home. 7. Perhaps she’s gone to stay with her mother. (might)  She might have gone to stay with her mother. 8. It’s possible that Mr Smith committed a crime. (may)  Mr Smith may have committed a crime. 9. I’m certain that he buried something in the garden. (must)  He must have buried something in the garden. 10. Perhaps he won the lottery. (could)  He could have won the lottery. Exercise 5. Rewrite the sentences using the correct modal verbs. 1. Don't park your car on bends. It is illegal.  You cannot / mustn’t park your car on bends. 2. Perhaps she will agree with it. Who knows?  She may / might agree with it. 3. I want you to tidy the classroom.  You must tidy the classroom. 4. I need your help. It's too much work for me.  You must help me. 5. Look at that balloon. It's over there.