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科目： 來(lái)源：不詳 題型：單選題

— Tony, are you listening to me?
—Sorry, Sir. I ______ to figure out what you said just now.
A．was tryingB．have triedC．triedD．had tried

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科目： 來(lái)源：不詳 題型：單選題

—Come on，Kitty.
—Oh, good heavens! Both my legs are nearly to give out. I_______ for hours like a dog.
A．have been walkingB．had walkedC．was walkingD．walked

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科目： 來(lái)源：不詳 題型：單選題

In the school hall, where a meeting       , some students are busy preparing for it.
A．is held B．has been heldC．is being heldD．is to be held

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科目： 來(lái)源：不詳 題型：單選題

Mr. Lee, who        as a guide for over 10 years, is now a manager in a big travel agency.
A．workedB．has workedC．had workedD．works

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科目： 來(lái)源：不詳 題型：單選題

The scientist __________ the experiment for half a year, but he _______ yet.
A．made; didn’t succeedB．made; hasn’t succeeded
C．was making; didn’t succeedD．has been making; hasn’t succeeded

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科目： 來(lái)源：不詳 題型：單選題

It’s high time that we _____ measures to stop selling polluted vegetables.
A．must takeB．take C．tookD．will take

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科目： 來(lái)源：不詳 題型：單選題

Social attention should be paid          our earth from        .    
A． to prevent; being pollutedB． to preventing; polluted　
C． to prevent; pollutingD． to preventing; being polluted

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科目： 來(lái)源：不詳 題型：單選題

When and where to build the new factory ___ ________ yet.
A．is not decidedB．a(chǎn)re not decided
C．has not decidedD．have not decided

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科目： 來(lái)源：不詳 題型：單選題

According to the statistics, although more books ________ in recent years, Chinese people spend ________ time in reading.
A．have been come out; littleB．have come out; less
C．have come out; littleD．have been come out; less

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科目： 來(lái)源：不詳 題型：單選題

—I haven’t finished my essay because the computer broke down when I was downloading the required data last night.
—Really! You could have turned to me. I         mine.
A．didn’t useB．won’t useC．hadn’t usedD．wasn’t using

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