[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.
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

正确答案:C
题目解析

本题考查对主语从句的判断与使用。
空缺处后为谓语、宾语、宾语补足语,即缺少主语成分,且后面为was that,可知此部分为主语从句,需使用what引导,故选C。

句意:他们在森林里迷失了方向,更糟的是夜色开始降临。

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