1. Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
A. it, it B. what, what
C. it, what D. what, it
2. I dislike _______ when others laugh at me in public or think poorly of me behind.
A. that B. those
C. it D. them
3. I’ve no idea. I just pretended nobody was at home, so I didn’t ask who _______ was.
A. he B. that
C. she D. it
4. “Excuse me, I want to have my watch fixed, but I can’t find a repair shop.” “I know ________ nearby. Come on, I’ll show you.”
A. one B. it
C. some D. that
5. Will you see to _______ that my children are taken good care of while I am away?
A. it B. me
C. yourself D. them
6. Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.
A. it B. that
C. one D. which
7. He made _____ known to his friends that he didn’t want to enter politics.
A. that B. it
C. himself D. him
8. It used to be thought _____ the Earth was flat.
A. as B. when
C. since D. that
9. The Parkers bought a new house but ______ will need a lot of work before they can move in.
A. they B. it
C. one D. which
10. _______ is well known _______ Hong Kong returned to China on July 1st, 1997.
A. It, that B. As, /
C. As, as D. It, which
【答案解析】
1.选C
【解析】第一空填形式主语，真正的主语是其后的不定式to play with fire。第二空填what，what is difficult 是主语从句，注意what is difficult 后的谓语动词is。故选C。
2.选C
【解析】因为在通常情况下，like 是及物动词，其后应有宾语(句中it 即为其宾语)。句中的when 从句不是宾语从句，而是时间状语从句，其中的when 的意思是“当……的时候”。其实，也有的词典将I don’t like it when (if) … 作为一个句型来处理。能这样用的动词不多，主要的有enjoy, like, dislike, love, hate, prefer, appreciate等表示喜好的动词。故选C。
3.选D
【解析】it 用以指身份不明的人。若指身份明确的人，则不宜用it。故选D。
4.选A
【解析】it 和one 的区别可简单地概括为：it = the + 名词，one = a + 名词。如：I haven’t got any pens, and I want to borrow one. 我没有钢笔，我想借一支。(one = a pen)故选A。
5.选A
【解析】it 为形式宾语，真正的宾语是空格后that引导的宾语从句。see to 意为“负责”、“注意”，其中的to 为介词，不宜直接跟that引导的宾语从句，遇此情况可借助代词it。故选A。
6.选C
【解析】one 指a coat。比较：it = the +名词，one = a+名词，换句话说，it 是特指的，而one 则是泛指的。故选C。
7.选B
【解析】it 为形式宾语，真正的宾语是that he didn’t want to enter politics。故选B。
8.选D
【解析】it 为形式主语，此句为People used to think that the Earth was flat 的被动语态形式。故选D。
9.选B
【解析】it 指前面提到的new house。注意不能选D，因为其前有并列连词but。故选B。
10.选A
【解析】it 为形式主语，其后的that从句为主语从句。故选A。
——相关推荐——
