I mailed the letter two weeks ago.She-----it.

問題描述:

I mailed the letter two weeks ago.She_____it.
A.must receive
B.can't receive
C.might receive
D.must have received
Nowadays computers _________________ widely in our daily life.
A.use
B.used
C.will use
D.are used
1個回答 分類:英語 2014-09-23

問題解答:

我來補答
D  must have done 對過去某事的推測,一定是.了,本句意思是她一定是收到了.
D  被動語態,結構是主語+be動詞+過去分詞,其它三項結構都是錯誤的,只有D是正確的.
 
 
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