—— It seems that his health is improving—— Yes．It is ten years he ．A. since； smokedB. si

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。