问题补充:
—— It seems that his health is improving.
—— Yes.It is ten years he .
A. since; smoked
B. since; did n’ t smoke
C. that; smoked
D. before; smoked
答案:
(答案→)A. since; smoked
B. since; did n’ t smoke
C. that; smoked
D. before; smoked
解析:考查句型:It is + 时间段 + since + 一般过去式,自从什么时候起有一段时间了。题中句意为自从他戒烟以来已经十年了。故选A。