1.The poor man didn't know_____in his house at that time.

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1.The poor man didn't know_____in his house at that time.
A.what was happended B.what is happening
C.what was happening D.what did it happen
2.A:（）there is no water left on the earth
B:I really don't know.
A.What if B.Ever since C.Ever though D.So far
请说明具体原因

1 C
因为后面是at that time,所以是过去进行时
2 A
what if常用法
（一）含义
　　要是…又怎样；如果...将会怎么样；如果...又怎样.
（二）例句与用法
　　1.What if it is true?　　如果这是真的又该如何呢?　　2.What if he doesn't agree?　　如果他不同意该怎么办呢?　　3.What if he comes back now?　　如果他现在回来怎么办?

She didn't like __ at the poor man . At that time,the poor girl can't but __ all her belongings a at that time the poor girl can't but __ all her belongings a At last,the _ man _(die),but his _ didn't cause too much sup I didn't know her at all.That was the first time I ( )to her even at the time,I knew that it didn't make a whole a lot of At the time of the murder,the man claimed that he had been t We didn't where we were at that time. I didn't think maths ______ important at that time. 1.The Whites were very poor at that time and ___ send their the house cost that we didn't it 1.I sing at her house ,but she didn't come to the door,Iwas