问题
选择题
—— 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
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。