Question

【题目】It suddenly occurred to him ____ he had left his keys in the office．

A．that B．what

C．where D．which

Answer 1

【答案】A

【解析】

试题分析：在英语中“it occurs/occurred to sb．+that从句”是固定句型，意思是某人突然想起…。根据句意，可知选A。