题目内容

You ______ take responsibility for the mistake, since it was not your fault.

A. mustn't
B. have not to
C. couldn't
D. don't have to

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__________ you show me how to do the addition, Mr. Wang?

A. May
B. Could
Can
Do

_______ I have a look at your passport, sir?

A. Should
B. Do
C. May
D. Would

-- Must I hand in the homework on Monday?-- _____________ it's on Tuesday.

A. Yes, you must.
B. Yes, you have to.
C. No, you mustn't.
D. No, you don't have to.

沟通礼仪的原则有( )

A. 敬人
B. 自律
C. 适度
D. 真诚

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