题目内容

What _ you doing? We __ reading.

A. are; are
B. is ; are
C. are ; is

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What _ they doing? They __ doing their homework.

A. is , are
B. are ; are
C. am; is

What _ he doing? He _ working hard.

A. are ; are
B. are; is
C. is ; is

What you doing? I _ washing the dishes.

A. are; is
B. is ; am
C. are; am

你在干什么呢?

A. Where are you doing?
B. What are you doing?
C. What is he doing