Question

It suddenly occurred to him _____ he had left his keys in the office.

A．whether

B．where

C．which

D．that

Answer 1

D

試題分析：考查固定結構。固定結構it occur to sb that…某人突然想去某事；it是形式主語，真正的主語是that引導的主語從句。That沒有任何意思只是在句中起引導作用。句意：他突然想起他把鑰匙忘記在辦公室里了。故D正確。
點評：。固定結構it occur to sb that…某人突然想去某事；it是形式主語，真正的主語是that引導的主語從句。That沒有任何意思只是在句中起引導作用。