31．Della turned all of her pockets inside out only to find $ 1.87 buy Jim a present for Christmas.
| A．with what to | B．with that she can |
| C．in which to | D．with which to |
--- Why is Jenny still standing there? It’s so cold.—She _____ for someone.
| A．can wait | B．might have waited | C．must be waiting | D．should have waited |
His homework______, but it _____.
| A．needs correcting; needn’t rewriting |
B．need be corrected; doesn’t need to be rewriting |
C．needs correcting; needn’t be rewritten |
D．needs to be corrected; needn’t to be rewritten |
—I didn’t see her yesterday.—Of course, you _____, because she had gone to a trip.
| A．can’t | B．may not have | C．can’t have | D．mustn’t have |
—You know that you were driving at 100 kilometers per hour, don’t you?—No, officer, I _____ have been. This car can’t do more than 80.
| A．mustn’t | B．shouldn’t | C．may not | D．couldn’t |
—May I speak to the patient now?—No, you _____. He is too weak now.
| A．needn’t | B．may not | C．mustn’t | D．oughtn’t |