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13. Look! What you've done! You    more careful.       A. may be     B. had to        C. should have been     D. would be

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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

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11. What we     get seems better than what we have.     A. can          B. could          C. can't           D. couldn't

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10. I thought it over, but   come to no conclusion.     A. can          B. could          C. should         D. would

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9. I want to go to the chemist's, but you     go with me.   A. need not      B. must not    C. need           D. can’t

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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

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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

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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

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5. The reason why they     leave wasn't explained to us.   A. had         B. had to      C. must          D. might

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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

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