1 . In this country, the population of the countryside is much smaller than _______of big cities .

A．that

B．this

C．these

D．those

2 . The computer on the right doesn’t work. May I use ______on the left .

A．the one

B．one

C．it

D．that

3 . —Which are cheaper?
—The________from Canada.

A．ones come

B．one come

C．ones

D．one is

4 . The computers on the right and left broke down. May I use ________ in the middle?

A．one

B．the one

C．that

D．it

5 . The population in developing countries is growing faster than _________ in developed countries.

A．one

B．that

C．this

D．it

6 . —What do you think of the sitcom Home With Kids?
—So ________ and I can't stand ________.

A．successful; it

B．successful; them

C．meaningless; it

D．meaningless; them

7 . This is my new bike. I like________ very much.

A．them

B．they

C．it

D．her

8 . —Do you have small eyes?     
—No, I don’t. I have wide _______ (one).

9 . The number of teachers in our school is larger than ______ of theirs.

A．it

B．this

C．that

D．those

10 . My parents work hard and make ________ possible for us to live a better life.

A．it

B．that

C．this

D．one