Question

 (2011年煙臺四校聯(lián)考)________suddenly occurred to him that his parents should have arrived in Beijing by this time.

A．What                           B．It

C．That                            D．As

Answer 1

解析：選B。考查句型。句意：他突然想起來，他的父母現(xiàn)在應(yīng)該到北京了。此句中的it作形式主語，后面的從句為真正的主語。注意句型It occurred to sb.that...某人(突然)想起/想到……。