1. I tried to phone you but there was no answer. | |
a) | I must have been asleep. |
b) | I couldn't have been asleep. |
2. I tried to phone you but there was no answer. | |
a) | I must have been in the office. |
b) | I couldn't have been in the office. |
3. I passed Jane in the street and she didn't speak to me. | |
a) | She must have seen you. |
b) | She couldn't have seen you. |
4. I've rung their office three times and have had no reply. | |
a) | They must have all gone home. |
b) | They couldn't have all gone home. |
5. I'm sure that Harry was sacked for stealing. | |
a) | Not Harry! He must have done something so awful. |
b) | Not Harry! He couldn't have done something so awful. |
6. That suit looks fantastic. | |
a) | You must have paid a lot for it. |
b) | You couldn't have paid a lot for it. |
7. I can't find my wallet. | |
a) | I must have left it in the restaurant. |
b) | I couldn't have left it in the restaurant. |
8. We went to an excellent restaurant but John hardly ate a thing. | |
a) | He must have been hungry. |
b) | He couldn't have been hungry. |
9. You didn't do what I told you to do. | |
a) | You must have been listening. |
b) | You cannot have been listening. |
10. Thank you for all your help. | |
a) | I must have done it without you. |
b) | I couldn't have done it without you. |
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