问题

Are you cleaning your room–________ I ’m listening to a CD．

A:Yes，I am
B:No，I’m not
C:Yes，I do
D:No，I don’t;

正确答案是：

同类题型

We __________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

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, which has been widely used in________ recent years, is ________ good way of ________ communication