摘要：He doesn’t know . A. to do what B.to do how C.what to do D.how to do
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He looks upset. He doesn’t know ________.
A. what to do it B. how to do it C. how to do D. do what
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He looks upset. He doesn’t know ________.
A. what to do it B. how to do it C. how to do D. do what
查看习题详情和答案>>