1.【2013届山西太原五中高三12月考】31. Water, which seems to be so simple and common, is ______ makes life possible.
A. that B. which C. what D. where
【答案】C
【解析】what 引导表语从句且作makes的主语。句意：似乎很简单和普通的水是使生命可能产生的东西。此处what引导表语从句，并在表语从句中作主语。
【考点定位】考查表语语从句的连接词
2.【2013届甘肃兰州一中高三上学期期中】25.It matters little _______ they represent themselves as, but ______ matters much
is ______they achieve.
A. what, what, how B. how, that, what
C. that, what, how D. what, what, what
