It"s dark, Mum ___ be waiting for my return.A．canB．shouldC．mustD．may
题型：不详难度：来源：
| It"s dark, Mum ___ be waiting for my return. |
答案
| C |
解析
| must表示一种推测,意为:想必, 一定.只能用于肯定句中. |
举一反三
He ___ at the meeting this morning.He was in hospital at the time.| A．couldn’t have spoken | B．mustn’t have spoken | C．shouldn"t have spoken | | D．needn’t have spoken |
|
He ___ be in the garden.He must be in the room.
‘| A．can"t | B．mustn’t | C．will not | D．may not |
|
“Do you have to leave now? ” “I’m sorry, but I really ____.”
A. can’t B,have C.should D.must |
| See who’s there! ____ it be Mary? |
John ___ be a basketball player.He’s much too short.| A．may | B．mustn’t | C．can"t | D．should |
|
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