－Why don't we take a little break?

－Don't we just have ________.

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Mr. Smith will show you ________ you have observed can be used in other contexts.

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You can give the book to ________ hasn't read it.

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Einstein's most famous theory is ________ we call the Theory of Relativity.

[　　]

I don't like ________ you speak to her.

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________ it with me and I'll see what I can do.

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________, I would take the job.

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I wish very much you ________ manage to come over.

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－I'm going to Shanghai next week. Do you have anything ________ to your grandparents in Shanghai?

－No, thank you all the same.

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My sister met him at the railway station yesterday afternoon, so he ________ your lecture.

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A．needn't have attended

B．couldn't have attended

C．mustn't have attended

D．shouldn't have attended