1 . _________I know she's not perfect, I do like her.

A．While	B．When
C．Because	D．Once

2 . I was about to leave _____ the telephone rang.

A．then	B．when
C．that	D．and when

3 . This is the deepest swimming pool _____ I have ever seen in China.

A．which

B．what

C．where

D．that

4 . It is not always easy for the public to see ________ use a new invention can be of to human life.

A．whose

B．what

C．which

D．that

5 . The old man asked Lucy to move to another chair__________he wanted to sit next to his wife.

A．although

B．unless

C．because

D．if

6 . There was a time ________the boy often quarreled with his parents.

A．which	B．when
C．that	D．where

7 . （2015·天津）The boss of the company is trying to create an easy atmosphere _______his employees enjoy their work.

A．where	B．which
C．when	D．who

8 . The Science Museum, ________ we visited during a recent trip to Britain, is one of London’s tourist attractions.

A．which

B．what

C．that

D．where

9 . You may use the room as you like ________ you clean it up afterwards.

A．so far as

B．so long as

C．in case

D．even if

10 . ___________ is known to everyone, the moon travels round the earth once every month.

A．It	B．As
C．That	D．What