一道英语选择题目,选什么,为什么

题目

一道英语选择题目,选什么,为什么
———seems no need to wait any longer .Chance are that they won't turn up .
A .it B .He C .There D .That

答案

答案是C
你的句子是简单句.改写成主语从句是：
It seems that there is no need to wait any longer.