I will help you when I( )my work.A.finis

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问题 I will help you when I( )my work.A.finishB.will finishC.will have finishedD.have finished

选项 A.finish
B.will finish
C.will have finished
D.have finished

答案 D

解析 该题考查时态用法。根据时态一致原则排除B、C选项,另外现在完成时态用于时间或条件状语从句表示将来完成动作,故选D。又如:I will return the book if I have finished it.
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