Question

【题目】He was impolite to the Customs Officer, _______, of course, made things even worse.

A.whoB.thatC.whatD.which

Answer 1

【答案】D

【解析】

句意：他对海关官员不礼貌，这当然使事情更糟了。

考查定语从句。that不能引导非限制性定语从句；who作关系词时，先行词应该是指人的词；what不能引导定语从句。which引导非限制性定语从句，which可指代主句的整个情况。故选D。