Tom used to live in California,——?

问题描述:

Tom used to live in California,——?
used he
did he
was he
didn't he
给出正确答案,理由并翻译

D didn't he
used to do sth.过去常常,是一般过去时的句子,反意疑问句遵循前肯后否,用didn't 去否定,所以答案为D:didn't he