10.“How long have you been here?” “_______ the end of last month.”A.In B.ByC.At D.Since

问题描述:

10.“How long have you been here?” “_______ the end of last month.”
A.In B.ByC.At D.Since

B

d.

D
how long在此是用来对动作所持续的时间长度提问,即询问的是时间段,“since+(过去的)具体时间”就是表达这个概念.

时间段的 选D