Question

【题目】He wrote a long letter ______ he explained what had happened in the accident.

A. what B. which C. where D. how

Answer 1

【答案】C

【解析】句意：他写了一封信，在信中他解释了交通事故中所发生的事情。定语从句中，a long letter是先行词，在从句中作状语in the long letter，所以用关系副词where，表示在信中。故选C。