He was seriously ill.____is why he didn't come to the meeting. A.It B.This C.That 前句描述的是过去的事,所以只能用that,他那天重病,那就是为什么没有来参加会议的原因. The woman is already fifty,but she doesn't look __. A.like B.it C.such look like是长得像,及物动词,但这题后面没有宾语,所以排除A,没有C的搭配用法. 后面这题出得不是很好,不知道你是从哪里看到的这题.我是高中英语老师,很多教参上会有出得不好的题,不必太在意.但高考英语中考查的较多的是one,that,it ones ,those这些代词的辨析.Ø