168. Whenever I met him was fairly frequent I liked his sweet and hopeful smile.A. tha

问题补充：

168. Whenever I met him, was fairly frequent, I liked his sweet and hopeful smile.

A. that; that

B. which; /

C. it; that

D. it; so

答案：

A. that; that

B. which; /

C. it; that

D. it; so

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