题目内容

例:A computer can only do you have instructed it to do.

A.how

B.after

C.what

D.when

答案是C.

-Can I pay the bill by check?

-Sorry, sir.But it is the management rules of our hotel that payment ________ be made in cash.

[  ]

A.shall

B.need

C.will

D.can

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