According to a UN report, some 844 animals and plants ______ in the last 500 ye
题型：不详难度：来源：
According to a UN report, some 844 animals and plants ______ in the last 500 years.| A．disappeared | B．were disappeared | | C．have disappeared | D．had been disappeared |
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答案
| C |
解析
| 考察时态，根据题意根据联合国报告，在过去500年中大约844中动物和植物已经消失。说的是过去发生到现在已经完成的事情，故选C，现在完成时态。 |
举一反三
Hi, Traly, you look tired.
I’m tired. I the living room all day.| A．painted | B．had painted | | C．have been painting | D．have painted |
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—— Ann is in hospital.
____ Oh ,really? I ______ know. I ______ go and visit her.| A．didn’t, am going to | B．don’t , would | C．don’t, will | D．didn’t, will |
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Tony ______ his homework this morning before he went to school.| A．has done | B．did | C．has done | D．will do |
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John went to the hospital alone. If he me about it, I would have gone with him. | A．tells | B．told | C．should tell | D．had told |
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—Where is the telephone book?
—I ________ and get it for you.| A．am going to go | B．will go | C．will be going | D．am going |
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