1 . Some hard-working students always keep a torch in their dormitories _____ there is a power failure．

A．if	B．unless
C．so that	D．in case

2 . 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

3 . You can’t imagine the difficulty he ____ into the cold river and saving the drowning girl.

A．had to jump	B．had jump
C．had jumping	D．had jumped

4 . One can always manage to do more things no matter ________ full one's schedule is in life．

A．how

B．what

C．when

D．where

5 . I don't think he is the suitable person，for he____experience，____is essential for the job.

A．lacks；which

B．lacking；as

C．lacks of；which

D．lacked；that

6 . It rains a lot these days， _______ prevents us from going out.

A．it	B．that
C．this	D．which

7 . I used to go to the English Corner every weekend, _______ I made some foreign friends.

A．where

B．of which

C．when

D．with whom

8 . My brother bought a telescope, ______ he could study the star in the night sky.

A．of which

B．through which

C．in which

D．on which

9 . ______,we know each other well.

A．As time going on	B．With time goes on
C．With time to go on	D．As time goes on

10 . Our English teacher often creates an environment ________we are given the opportunity to practice spoken English.

A．when	B．which
C．where	D．that