问题补充：
They lost their way in the forest, and made matters worse was that night began to fall.
A. that
B. it
C. what
D. which
答案：
A. that
B. it
(答案→)C. what
D. which
解析：此题考查名词性从句。that,it和which都不能在句中作成分引导主语从句，排除A、B、D三项。题意为“他们在森林里迷路了，更糟糕的是天开始黑了”。汉语中的“更糟糕的” 可用worse still,to make matters worse,what made matters worse等表达。但worse still和to make matters worse一般用作状语，而what made matters worse常作主语从句。此题中明显是作主语，故答案为C项。此句可改为:They lost their way in the forest.Worse still,night began to fall.或They lost their way in the forest,and to make matters worse,night began to fall.
