Don’ttouchthemachinetheteacher

Don’t touch the machine_________ the teacher allows you to.

A．if

B．unless

C．since

D．that

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相关试题

______ he got ready to leave home, his parents came to his home.

A．While

B．As

C．Until

D．If

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---Is Mr. Xi Jinping _______ honest and capable man?
---Yes. And that is why he was chosen to be _______ president of our country.

A．a; a

B．an; the

C．the; the

D．a; /

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—What did he say just now?
—He wondered___________________.

A．when would the film begin	B．how he could get to the zoo
C．if he could join us or not	D．where he will go tomorrow

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It’s__________ for all of them__________ to the top of the mountain.

A．tiring; getting

B．tired; to get

C．tired; getting

D．tiring; to get

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－Must I make the writing plan now?
－ No, you______. You______ finish it tomorrow.

A．needn’t, must　

B．don’t have to, may

C．mustn’t, may

D．mustn’t, must

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