If you _______ spit at all. please spit in the bucket provided. A．shallB．must C

题型：不详难度：来源：

If you _______ spit at all. please spit in the bucket provided.

A．shall

B．must

C．should

D．may

答案

解析

试题分析：考查情态动词。If you must (do sth.)“(表示虽不赞同但可允许)如果你一定要(那么做)”。must“偏偏；非要”，符合句意。句意：如果你非吐痰不可，请吐到专备的痰盂里。故B正确。

举一反三

The door _______ open, no matter how hard she pushed.

A．shouldn‘t

B．couldn"t

C．wouldn"t

D．mightn"t

题型：不详难度：| 查看答案

My sister met him in the hospital yesterday afternoon, so he _________ your lecture.

A． couldn’t have attended	B． needn’t have attended
C． mustn’t have attended	D． shouldn’t have attended

题型：不详难度：| 查看答案

We can hardly believe such a young boy ______ travel around the world all by himself.

A．may

B．need

C．should

D．must

题型：不详难度：| 查看答案

The door _____ open, no matter how hard she pushes.

A．doesn’t

B．can’t

C．won’t

D．shouldn’t

题型：不详难度：| 查看答案

–I have packed your luggage for you need to rise early tomorrow.
--Thanks. You ______ that. I am a big girl now and I can manage it, Mum.

A．needn’t do	B．needn’t have done
C．mustn’t do	D．shouldn’t have done

题型：不详难度：| 查看答案