____ you fall hurt your knee?A.If B.Whether C.What if D.Though

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____ you fall hurt your knee?A.If B.Whether C.What if D.Though

____ you fall hurt your knee?A.If B.Whether C.What if D.Though
____ you fall hurt your knee?
A.If B.Whether C.What if D.Though

____ you fall hurt your knee?A.If B.Whether C.What if D.Though
B
你摔下来是否伤到了膝盖?