We have been cleaning the house these days.We have been (cleaning the house) these days.(对括号部分提问）______ _______ you ________ ________ these days.

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• We have been (cleaning the house) these days.(就括号部分提问) ——————————
• We have been (cleaning the house) these days.(就括号部分提问) ———————————— —— you —— —— these days?
• We have been cleaning the house these days.We have been (cleaning the house) these days.(对括号部分提问）______ _______ you ________ ________ these days.
• We have been cleaning the house these days.
• Before the Kings returned home,the house____thoroughly.A.has cleaned B.had cleaned C.has been cleaBefore the Kings returned home,the house____thoroughly.A.has cleaned B.had cleaned C.has been cleaned D.had ben cleanedBefore是·····之前，在金回家之前，要把房子彻底打扫干净。所以是说房子还没没被开始打扫，那应该是什么时态呢？
• mr wang has worked in this company____1998 a.in b.for c.since d.after