they lost their way in the mountain,and ( )made mater worse was that night was coming.A.that B.it C.what D.which 望能详细解释

问题描述:

they lost their way in the mountain,and ( )made mater worse was that night was coming.
A.that B.it C.what D.which 望能详细解释

选择C
They lost their way in the mountain,and 【what】made matter worse was that night was coming.
他们在山里迷路了,跟糟糕的是夜晚要降临了.
【主语从句what made matter worse 】【系词was】【表语从句 that night was coming.】
what~是主语从句,在从句部分中作主语.