My uncle lost his job and was short of money,so ? his flat and move in with his friend.
问题描述：
My uncle lost his job and was short of money,so ? his flat and move in with his friend.
A.that he did was to sellB.what he did sellC.what he had sold
D.what he did was to sell
请告诉我答案及解题过程!谢谢!
答
D.What he did 是主语从句,was是联系动词,to sell his flat...是不定式作表语.