Question

18. Whenever I met him, _____ was fairly often, I like his sweet and hopeful smile.

A. what    B. that    C. which    D. when

Answer 1

C

解析:

選C。非限制性定語從句不用that，而應(yīng)該使用which。本題中的which指代整個(gè)主句的內(nèi)容。