A、  B、  C、  B题目为询问为什么安装额外电话机的带有疑问词why的一般疑问句。

admin2017-04-10  6

问题  
Do you know why we installed the extra telephones?
(A)Yes, they just called.
(B)Our lines were always busy.
(C)About 14 cents per minute.

选项 A、 
B、 
C、 

答案B

解析 题目为询问为什么安装额外电话机的带有疑问词why的一般疑问句。
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