C
when不能与完成时连用,故排除A与B,
第二空根据前面是过去完成时,从句应该是一般过去时
-- When _____ you _____ your homework?--I had finished it befor he_____ back.
-- When _____ you _____ your homework?--I had finished it befor he_____ back.
A.have;finished;came B.have;finished;was coming
C.did;finish;came C.did finish;was coming
A.have;finished;came B.have;finished;was coming
C.did;finish;came C.did finish;was coming
英语人气：571 ℃时间：2019-08-22 20:12:55
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