Question

【题目】-----________ did your uncle leave his home town?
----He ___________ for nearly twenty years.
A.When, has left
B.When, has been away
C.How long, has left
D.How long, has been away

Answer 1

【答案】B
【解析】句意：—你叔叔什么时候离开家乡的？—他离开几乎20年了。根据语境第一空是一般过去时态，强调的是时间，所以用when；第二空和时间状语for nearly twenty years连用要用延续动作动词，所以选B。