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科目： 來源：不詳 題型：單選題

—Why does the lake smell terrible?
—Because large quantities of water______.          
A．have pollutedB．is being polluted
C．has been pollutedD．have been polluted

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科目： 來源：不詳 題型：單選題

—I phoned you at 9 this morning but got no answer.
—I am sorry. I _____ the bell. I _____ in the garden.
A．didn’t have heard, must have beenB．didn’t have heard, must be
C．didn’t hear, must have beenD．didn’t hear, must be

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科目： 來源：不詳 題型：單選題


The boy was curious about how the waste paper was        into a model kite.
A．improvedB．unitedC．transformedD．mixed

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科目： 來源：不詳 題型：單選題


Hurry up! The shop ＿＿ in five minutes.
A．closes B．is closing C．has closed D．is about to close

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科目： 來源：不詳 題型：單選題


Customers are asked to make sure that they ____ the right change before leaving the shop.
A．will giveB．have been givenC．have givenD．will be given

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科目： 來源：不詳 題型：單選題


No decision __about any future appointment until all the candidates have been interviewed.
A．will be madeB．is madeC．is being madeD．had been made

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科目： 來源：不詳 題型：單選題


The police questioned William closely and he finally admitted ________the car.
A．to stealB．having stolenC．to have stolen D．steal

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科目： 來源：不詳 題型：單選題


一I’m sure  Andrew will win the first prize in the final．
一I think so．He  for it for months．
A．is preparingB．was preparing
C．has been preparingD．had been preparing

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科目： 來源：不詳 題型：單選題


My uncle _____ to see me. He'll be here soon.
A．comes B．is coming C．had come D．came

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科目： 來源：不詳 題型：單選題


Hurry up! Flight 4406        off at 18:40.
A．takesB．tookC．will be takenD．has taken

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