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 did soldD.what he did was to sell在线课程D
从题意知“失业缺钱，他要做的就是卖房子投靠朋友”，what he did作主语从句，不定式to sell his flat and move in with his friend作表语。答案为D。