8. What a long way ____ from Beijing to London!

　　　 A. is　 B. it　　 C. it is　 D. that is

7. ---- I wonder if I could use your telephone?

　 　　　---- ___________.

　　　 A．I wonder how.　　　　　 B. I don’t wonder

　　　 C. Sorry, it’s out of order　　 D. No wonder, here it is.

6．Is ___ necessary to tell him about it?

　　　 A. that　 B. it　　 C. this　 D. she

5. ---- I’m sorry I broke your mirror.

　 　　　---- Oh, really? ______

　 　　　A. It’s OK with me　　　 B. It doesn’t matter

　 　　　C. Don’t be sorry　　　　 D. I don’t care.

4. ____ is fact that English is being accepted as　 international language.

　　　 A. There　 B. As　 C.　 That　 D. It

3. It was not until 1920 ____ regular radio broadcasts began.

　　　 A．while　 B. which　 C. that　 D. since

2．I was disappointed with the film. I had expected ___ to be much better.

　　　 A. that　 B. this　 C. one　 D. it

1．Tom’s mother kept telling him that he should work hard, but ____ didn’t help.

　　 　　A. it　　 B. he　　 C. she　 D. which

2. 作形式宾语， 把真正的宾语放在后面，保持句子平衡。

　　　 常用句型： 主语+谓语+it+宾补(不定式，动名词，宾语从句)如：

　　 1)I think it wrong to eat monkeys .

　　 2)Do you consider it any good trying again?

　　 3)They want to make it clear to the public that they do an important job.

　　 有时形式宾语it 和真正的宾语之间没有补足语 。如：

1)You may depend on it that they will support you .

2)Could you tell me whose job you make it to keep the gate?

　　 IV.构成强调句。It 没有词义。

　　 It is/was +被强调部分(主语，宾语，状语)+ that (who, whom)+ 其它成分。如：

　　 It is I who/that am going to Beijing this Sunday.

　　 练习：

1．作形式主语，代替不定式，动词-ing形式或从句，使句子保持平衡 。

　　　 常用句型：It is +adj.+ for/of + to do sth.

　　　 　　　　　It is+( no) good/use+ doing

　　　　　 　　　　It is + n./adj.+ clause. 如：

　　 1)It’s foolish of you to be still worrying about it.

　　 2)It’s no use talking to him .

　　 3)It was clear that something was wrong with it.