1. Why shouldn’t I buy a new coat ― I haven’t bought _____ for five years.
A. it B. that
C. one D. which
2. He made _____ known to his friends that he didn’t want to enter politics.
A. that B. it
C. himself D. him
3. It used to be thought _____ the Earth was flat.
A. as B. when
C. since D. that
4. 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
5. _______ is well known _______ Hong Kong returned to
A. It, that B. As, /
C. As, as D. It, which
6. ― I don’t know whether I should go abroad or not, Mum.
― I leave _______ to your own judgment whether you should do it.
A. that B. it
C. this D. what
7. Does ________ matter if he can’t finish the job on time?
A. this B. that
C. he D. it
8. They are good friends. _______ is no wonder that they know each other so well.
A. This B. That
C. There D. It
9. They live on a busy main road. ______ must be very noisy.
A. There B. It
C. That D. They
10. Why don’t you bring ______ to his attention that you are too busy to do it?
A. this B. what
C. that D. it
11. “Look at that lady on the stage. She’s already forty.” “You are joking. She doesn’t look ________.”
A. so B. it
C. that D. this
13. _______ was known to them all that William had broken his promise ______ he would give each of them a gift.
A. As; Which B. What; that
C. It; that D. It; which
14. In the west, people make _______ a rule to send Christmas present to their relatives and friends.
A. this B. that
C. it D. the following
【答案与解析】
1. 选C。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。
2. 选B。it 为形式宾语，真正的宾语是 that he didn’t want to enter politics。
3. 选D。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。
4. 选B。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。
5. 选A。it 为形式主语，其后的that从句为主语从句。比较下面一题，答案选B：
_______ is well known, _______ Hong Kong returned to
A. It, that B. As, /
C. As, as D. It, which
6. 选B。it 为形式宾语，真正的宾语是 whether you should do it.
7. 选 D。it doesn’t matter if…, does it matter if… 等为英语常用表达。
8. 选 D。it’s no wonder that… 意为“难怪……”、“……不足为怪”，为英语固定表达，其中的 it’s 也可省略，即只说 No wonder that…。如：
No wonder (that) he didn’t want to go. 难怪他不想去。
9. 选B。it 指环境(www.yygrammar.com)。
10. 选 D。it 为形式宾语，真正的宾语是 that you are too busy to do it.
12. 选 B。it 指 her age。look one’s age 为习语，意为“容貌与年龄相称”。
13. 选C。第一空填 it，为形式主语；第二空填that，用以引导一个同位语从句，修饰 promise。
14. 选 C。it 为形式宾语，真正的宾语是其后的不定式 to send Christmas present to their relatives and friends。