Though Bill is very young，he has a lot of ______ about Chinese history．（ ）
| A． |
information |
B． |
knowledge |
| C． |
background |
D． |
experience |
How do you find the TV play In the Name of People？
___________．（ ）
| A． |
Just a minute |
B． |
That's right |
| C． |
By chance |
D． |
It's fantastic |
We'd better ________when he is thinking，as he prefers to solve problems on his own．（ ）
| A． |
let him down |
B． |
cheer him up |
| C． |
leave him alone |
D． |
ring him up |
The program has helped out thousands of homeless children since the government ________it（ ）
| A． |
starts |
B． |
had started |
| C． |
will start |
D． |
started |
How about some more ice cream？
No，thanks．It's very good，but I have to _______ my weight，you know．（ ）
| A． |
prevent |
B． |
watch |
C． |
refuse |
D． |
keep |
The population of our city has increased ________ 40%，compared with _______ of 3 years ago．（ ）
| A． |
by；that |
B． |
to；those |
C． |
with；ones |
D． |
of；it |