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科目： 來源：不詳 題型：單選題

It is the second time that you have been late, ______?
A．haven’t you B．isn’t itC．is itD．have you

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科目： 來源：不詳 題型：單選題

I told them not everybody could run as fast as you did，________？(2011·重慶)
A．could heB．didn't I
C．didn't youD．could they

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科目： 來源：不詳 題型：單選題

He must be helping the old man to water the flowers，________？
A．is heB．isn't he
C．must beD．mustn't he

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科目： 來源：不詳 題型：單選題

It's the first time that he has been to Australia，________？
A．isn't heB．hasn't heC．isn't itD．hasn't it

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科目： 來源：不詳 題型：單選題

(2013·甘肅河西五市一模)Look! The ground is wet. It must have rained last night, ________？
A．hasn't it B．hadn't it
C．mustn't it D．didn't it

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科目： 來源：不詳 題型：單選題

Nothing that you say can change his mind, ________？
A．do you B．don't you
C．can it D．can't it

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科目： 來源：不詳 題型：單選題

—Where _______?
—I got caught in the traffic, or I would have been here sooner.
A．did you goB．had you gone
C．have you beenD．were you going

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科目： 來源：不詳 題型：單選題

There is no doubt that eating organic food will make you healthier, ________？
A．will itB．does it
C．is thereD．is it

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科目： 來源：不詳 題型：單選題

Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, ________？
A．isn't itB．does it
C．doesn't itD．is it

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科目： 來源：不詳 題型：單選題

Look！The ground is wet.It must have rained last night，________？
A．hasn’t itB．didn’t it
C．mustn’t itD．hadn’t it

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