3 . These Christmas traditions _________ the 1840s, and are actually German in origin.

A．dated back to	B．are dated from
C．were dated back to	D．date back to

4 . I’m afraid we’ll have to work extra hours, for some problems are hard   ________ (settle). (所给词的适当形式填空)

5 . He insisted that he __________ ___________（give）another chance.
他坚持要求再被给予一次机会。

6 . 单句改错
增加：在缺词处加一个漏词符号∧，并在右边的横线上写出该加的词。
删除：把多余的词用斜线＼划掉，在右边的横线上写出该词，并用斜线划掉。
修改：在错词下面划一横线，并在右边的横线上写出修改后的词。
1. When I saw the headteacher head towards the library, I greeted him with a smile.
2. He became ill and had temperature, which made me worried.
3. I would rather eating a piece of fruit.
4. Class Ten was consisted of 46 students in all, and Lucy was one of them.
5. He took a lot of exercises and was very fit.

7 . Sorry.   At no time _____ in this building, sir.

A．is smoking permitted	B．smoking is permitted
C．does smoking permit	D．smoking does permit

8 . –The pine tree in front of the lecture hall is so tall.
–Yes. It ______ nearly 20 metres.

A．measures

B．is measured

C．will measure

D．is measuring

9 . They realized that the problem Ted put forward was difficult _______.

A．to solve

B．solved

C．to be solved

D．solving

10 . I like getting up very early in summer. The morning air is so good       .

A．to be breathed	B．to breathe
C．breathing	D．being breathed