14. I think this is right.(改为否定句）

I_think    this_right.

3. 在我们班，一些学生喜欢打篮球，另一些（学生）喜欢打 兵乓球。(some...others...)

13. We did a survey of our readers.(改为否定句）

We__a    survey of our readers.

2. 随着年龄的增大，他开始对英语感兴趣了。 （As...)

12. It is cold in winter.(用or连成选择疑问句）

_it cold_hot in winter?

1. 我奶奶1946年出生在农村。（be born in)

11. Tom is stronger than any other student in his class.(改为同义句）

5. ―Are these birds very common(常见的)in our country? ―Yes, but you still can't see them_.

A • everywhere B • anywhere

C. somewhere D. nowhere

10.    My father works__my mother and I.

A. hard； than    B.    harder； than

C. hardest； of    D.    the hardest of

4. ―I don't think this maths problem is difficult. ―But_in our class can work it out.

A. somebod y B. every body

C•nobody D. anybody