当你问别人正在干什么时，应说： A、What do you do ?B、What are you do ? C、What are you doing ?
What _______ John and Tim ________? A.is……doing B.are……do C.are……doing
_________ do you write e-mails ? At 9:00 p.m. A. When B. What C. Where
I usually _________ on the weekend. A. climbing mountains B. climbs mountains C. climb mountains
We often _________ sports in the afternoon. A.play B.playing C.are playing
选出能对句子做出正确反应的答语。（1×6）
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