8. I think ______ lesson is the most difficult in this book. (5)

7. --- How many workers are there in your factory?--- There are two _______. (hundred)

6.---When was the PRC founded? --- It was founded on _______. (1949年10月1日)

5. I was 8 years old when my father was 31. This year my father is twice my age. How old am I? 　_______.

4. --- Do you have enough men to carry these chairs?

--- No. I think we need ______ men. (two more )

3. ______ of the workers in this factory is about two hundred, _______ of them are women workers.(the number, 1/3)

2.__________ Chinese are looking for ways to learn English well

　before Beijing 2008 Olympics . (thousand of)

1.Many _____ trees should be planted on the mountains. (thousand of)

4.I‘d like some water, but he wants______

A. two bottle orange　　　　　　 B. two bottles of orange

C. two bottles oranges　　　　　 D. two bottles of oranges

3.______ books must be produced for the children.

A. Many thousands 　　　 B. Many thousands of

C. Many thousand of 　　 D. Many thousand