--- Have you finished the report?
　--- No. I ______ it all this week.
A．will do B．had done
C．have done D．have been doing
D
現(xiàn)在完成進(jìn)行時可用于表示動作或狀態(tài)從過去某一時間開始，一直持續(xù)到現(xiàn)在，有可能繼續(xù)延續(xù)下去，也可能剛剛結(jié)束。本題使用現(xiàn)在完成進(jìn)行時強(qiáng)調(diào)了動作的持續(xù)性和未完成性。
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