_____ did your uncle leave Beijing A.When B.How often C.How long D.what time

问题描述:

_____ did your uncle leave Beijing A.When B.How often C.How long D.what time
标原因

A when 或者 D what time
你叔叔什么时候离开北京的?
how ofen 一般用现在时态
how long 一般用现在时态或者未完成过去时.