.The students in the classroom ______ not to make so much noise.a. need b. oug
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.The students in the classroom ______ not to make so much noise.
a. need b. ought c. must d. dare |
答案
| b |
解析
| 略 |
举一反三
You ______ last week if you were really serious about your work.
a. ought to come b. ought to be coming c. ought have come d. ought to have come |
The elephants ought ______ hours ago by the keepers.
a. to be fed b. to feed c. to being fed d. to have been fed |
“I wonder why they’re late.” “They ______ the train.”
a. can have missed b. could miss c. may have missed d. might miss |
You ______ the examination again since you had already passed it.
a. needn’t have taken b. didn’t need to take c. needn’t take d. mustn’t take |
.He is really incompetent! The letter ______ yesterday.
a. should be finished typing b. must be finished typing
c.must have finished typing d. should have been finished typing |
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