英语语法时态单选Peter has just arrived,and I didn't know he ( &n

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英语语法时态单选
Peter has just arrived,and I didn't know he ( )until last night.
A.had come B.was coming C.will come D.is to come
The teacher wants to know whether we ( )our papers.
A.had handed in B.would hand in C.have handed in D.are handing in

第一题选D,Peter是在我知道之前就到达了,用过去完成时,句子意思就是：Peter 已经到了,但我也是昨晚才知道.
第二题选C,前面wants是一般现在时,所以后面也要用表示”现在“的时态来对应,而交作业与与现在的情况有所联系,因此用现在完成时,句子的意思是：老师想知道我们是否交了作业.
希望采纳哦~!^_^
再问：谢谢，但是第一题答案是B啊，第二题对了。

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