问题描述：
1.I ( ) this story many times.A.hear of B.hear from C.have heard of D.have heard from
2.I 'll go shopping as soon as I( ) the room.A.clean B.cleans C.am ckeaning D.have cleaned
2.I 'll go shopping as soon as I( ) the room.A.clean B.cleans C.am ckeaning D.have cleaned
问题解答：
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