Question

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

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

Answer 1

【答案】C

【解析】

试题分析：句意：他写了一封信，在信中他解释了事故中发生的一切。a letter是先行词，从句本身主(he )--谓(explains )--宾(what had happened in the accident)成分齐全，缺少的是地点状语。可知使用关系副词where.故选C。