It ________ nearly two weeks ______ I had received his letter.A．is, thatB．was, t

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It ________ nearly two weeks ______ I had received his letter.A．is, thatB．was, t

题型：不详难度：来源：
It ________ nearly two weeks ______ I had received his letter.
A．is, thatB．was, thatC．is sinceD．was, since

答案
D
解析
since，for作为连词，引导时间状语（从句）如果谓语动词是延续性的一般过去时，其表达的含义是"从这个动作结束以来"，恰好和动词的词义相反，具有否定的含义；如果谓语动词是非延续性的一般过去时，其表达的含义是"从这个动作开始以来"，恰好和动词的词义一致，具有肯定的含义
举一反三
It is five years since my dear aunt _______ here.
A．leftB．has leftC．is leftD．had left

题型：不详难度：| 查看答案
Wherever I ____these days. I always carry my umbrella.
A．am goingB．shall goC．goD．should go

题型：不详难度：| 查看答案
Oh, it"s you, I"m sorry I ____know you ____here.
A．don"t, areB．didn"t, areC．didn"t ,wereD．don"t, were

题型：不详难度：| 查看答案
I___ to have another try if I get another chance.
A．have been meaningB．meanC．am meaninD．have meant

题型：不详难度：| 查看答案
-----What _____?
-----I______my key and can"t open the door.
A．happened, lostB．has happened, lost
C．happens, have lostD．has happened, have lost

题型：不详难度：| 查看答案
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