Question

 —It seems that his health is improving.
—Yes. It is ten years ___ he _____.

A．that, smoked

B．after, didn’t smoke

C．since, smoked

D．before, smoked

Answer 1

C

在It’s--------since-----句中，若动词为延续性动词，则表示其动词的反义概念。It’s 10 years since he smoked.表示他已戒烟十年了。等于It’s 10 years since he gave up smoking. 故选C。