--Excuse me, I don"t think you can smoke here. ---Really sorry. I ______ this is
题型：不详难度：来源：
--Excuse me, I don"t think you can smoke here.
---Really sorry. I ______ this is a non-smoking room.| A．didn"t know | B．don"t know | C．have no idea | D．haven"t known |
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答案
| A |
解析
试题分析：考查时态：句子的意思是：——打扰一下，先生，这是禁烟室。——抱歉，我不知道这是禁烟室。“我不知道这是禁烟室”应该是发生在过去的事情，所以使用一般过去时即可。选A。
点评：对于时态的考查要放个在具体的语境中，不能孤立，。 |
举一反三
This is the first time we ______ a film in the cinema together as a family.| A．see | B．had seen | C．saw | D．have seen |
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| Travelling in space has been made __________ possible with the development of science and technology. |
—Ken, why do you look so tired?
—I _______ myself to the climate since I came here.| A．didn’t adapt | B．haven’t adapted | C．don’t adapt | D．hadn’t adapted |
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—What should you do if you have problems with your life?
— .| A．To find a friend to talk | B．Find a friend to talk to | | C．Finding a friend to talk to | D．Found a friend to talk |
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—Guess what? I happened to have met Mark at the party last week．
—If my memory serves me correctly, you two ______ each other for almost ten years．| A．hadn"t seen | B．haven"t seen | C．didn"t see | D．don"t see |
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