作业帮I don't know___this answer is rightA.if Bwhere C.what D.how
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I don't know___this answer is rightA.if Bwhere C.what D.how
I don't know___this answer is right
A.if Bwhere C.what D.how
I don't know___this answer is rightA.if Bwhere C.what D.how
if
表示 是否
if
是否
A.if-是否
意思:我不知道这个答案是否正确