题目内容
【题目】—Look at the dog. What is it doing? ( )
—It's _______.
A. sleepB. sleptC. sleeping
【答案】C
【解析】
略
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题目内容
【题目】—Look at the dog. What is it doing? ( )
—It's _______.
A. sleepB. sleptC. sleeping
【答案】C
【解析】
略