题目内容
Tom ____ be ill, for I saw him playing basketball an hour ago.
| A．mustn’t | B．needn’t | C．can’t | D．may not |
C
解析试题分析：A. mustn’t禁止，B. needn’t不必，C. can’t不能，D. may not可能不，句意：汤姆不可能生病了，因为我看见他一小时前在打篮球。Can’t be是否定推测，表示“不可能”，选C。
考点：考查情态动词
It was very kind of you to do the washing-up but you _____ it
| A．needn’t do | B．shouldn’t do | C．mustn’t have done | D．needn’t have done |
When he was there, he ________ go to that coffee shop at the corner after work every day.
| A．would | B．should | C．had better | D．might |
Take your swimming suit because you __________ want to go swimming in the sea.
| A．would | B．must | C．should | D．might |
–Can I get out at noon?
--No. Our school rules state that no student ____ be allowed out at noon, unless he has a request form.
| A．shall | B．will | C．must | D．can |
--I have to go now to pick up my daughter.
--If you ________ go, at least wait till the rain stops.
| A．can | B．may | C．should | D．must |
—What qualities does a person need to become an astronaut?
—He ________be knowledgeable，independent and creative.
| A．can | B．may |
| C．would | D．should |
It ________ have been her to leave her child alone and do whatever she wanted. She isn't such a person.
| A．couldn't | B．mustn't |
| C．mightn't | D．wouldn't |