1．(2011年烟台四校联考)________suddenly occurred to him that his parents should have arrived in Beijing by this time.
A．What B．It
C．That D．As
解析：选B。考查句型。句意：他突然想起来，他的父母现在应该到北京了。此句中的it作形式主语，后面的从句为真正的主语。注意句型It occurred to sb.that...某人(突然)想起/想到……。
2．(2011年长沙模拟)The question has been raised at the meeting________each member country should equally share the expense of the committee.
A．that B．whether
C．if D．what
