6. I’m sure Luisa was very disappointed when she failed the exam. A. Luisa must be very disappointed when she failed the exam. B.. Luisa must have been very disappointed when she failed the exam. C. Luisa may be very disappointed when she failed the exam. D. Luisa could have been very disappointed when she failed the exam. 7. I really believe my letter came as a great surprise to John. A. John might be very surprised to receive my letter. B.. John might have been very surprised to receive my letter. C. John must be very surprised to receive my letter. D. John must have been very surprised to receive my letter.
8. Sally paid for her travel in advance, but it wasn’t necessary. A. Sally needn’t have paid for her travel in advance. B.. Sally might not have paid for her travel in advance. C. Sally may not have paid for her travel in advance. D. Sally couldn’t have paid for her travel in advance.
9. You needn’t have taken so many warm clothes there. A. It was not necessary for you to take so many warm clothes there. B.. You have taken so many warm clothes there that I don’t need. C. There’s no need for you to take so many warm clothes there. D. You took lots of warm clothes there but it turned out not necessary.
10. Mary should never have been allowed to try to swim in the sea alone. A. When Mary let to swim in the sea alone, she said new what she was doing. B.. It would probably be wrong to let Mary swims in the sea on her own. C. No one could have stopped Mary from trying to swim in the sea by herself. D. Someone ought to have stopped Mary from attempting to swim in the sea on her own.
11. It was impossible that he forgot to wear the helmet. A. He should have worn the helmet B.. He must have worn the helmet C. He might have forgot to wear the helmet D. He needn’t have forgot wearing the helmet
12. The fishes had died. I’m sure he forgot to feed them. A. He must have forgot to feed the fishes. B.. He should have fed the fishes.
