13. Look! What you've done! You more careful.[ ] A. may be B. had to C. should have been D. would be
12.─My goodness! I've just missed the train.
─That's too bad. I am sure you it, if you had hurried. [ ] A. could have caught B. had caught C. would catch D. could catch
11. What we get seems better than what we have. [ ] A. can B. could C. can't D. Couldn’t
10. I thought it over, but come to no conclusion. [ ] A. can B. could C. should D. would
9. I want to go to the chemist's, but you go with me. [ ] A. need not B. must not C. need D. must
8. The only thing that really matters to the children is how soon they return to their school. [ ] A. can B. must C. have to D. ought to
7. I asleep because it took me a long time to realize that the telephone was ringing. [ ] A. could have fallen B. should have fallen C. must have fallen D. mustn't have fallen
6. I searched for my wallet and it wasn't there. I thought I it at home. [ ] A. left B. have left C. might have left D. could have left
5. The reason why they leave wasn't explained to us. [ ] A. had B. had to C. must D. might
4.─ I help you with some shoes, madam? ─ Yes, I would like to try on those brown ones. [ ] A. Will B. Should C. May D. Must