【题目】—What ________ you ________? ( )
—I'm cleaning my room.
A.are; do B.are; doing C.do; doing
【答案】B
【解析】
略
【题目】—What ________ you ________? ( )
—I'm cleaning my room.
A.are; do B.are; doing C.do; doing
【答案】B
【解析】
略
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