The pilot kept calm in the terrible storm, otherwise the accident ______.A．could

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The pilot kept calm in the terrible storm, otherwise the accident ______.

A．couldn’t be prevented

B．mustn’t have prevented

C．wouldn’t have been prevented

D．shouldn’t prevent

答案

解析

根据句意“幸亏飞行员保持镇静，要不然这场事故是不会避免的”，对过去的推测。

举一反三

My aunt _____ here by now, for she took the early bus.

A．must arrive

B．can arrive

C．may arrive

D．ought to have arrived

题型：不详难度：| 查看答案

You _____ phone him if you want to, but you _____! He will surely phone you.

A．may; mustn’t

B．have to; needn’t

C．can; needn’t

D．can; doesn’t need

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The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.

A．shan’t

B．can’t

C．needn’t

D．mustn’t

题型：不详难度：| 查看答案

My MP4 player isn’t in my bag. Where I have put it?

A．can

B．must

C．should

D．would

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—Why am I so slow at doing the cloze test?

—I guess you didn’t realize the use _____ the contexts.

A．you should have made of	B．you must have made from	C．of which you could have from
D．out of which you need make

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