问题描述：
时间状语从句的问题
Please tidy the lab and put everything back in the cupboards when you _______ your experiment.\x0cA.will finish B.finished C.have finished D.are finishing 请问选什么?为什么?
Please tidy the lab and put everything back in the cupboards when you _______ your experiment.\x0cA.will finish B.finished C.have finished D.are finishing 请问选什么?为什么?
问题解答：
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