1 . You can never imagine what great trouble I have ______ this marble in my house.

A．found

B．for finding

C．to find

D．finding

2 . Diana used to _________ to work, but now she is used to _________ because the road is crowded and she wants to keep fit.

A．drive; walking

B．drive; walk

C．driving; walk

D．driving; walking

3 . He used to _____ up late, but now has got used to _____ early since he entered the high school.

A．get; get

B．get; getting

C．getting; get

D．getting; getting

4 . To avoid _____ the last bus, please read the notice _____ up in the station.

A．missed; put

B．missing; put

C．missed; putting

D．missing; putting

5 . Once be falls asleep, I have great difficulty _______ him up.

A．wake	B．waken
C．to wake	D．waking

6 . Social attention should be paid _______ our earth from _______.

A．to prevent; being polluted	B．to prevent; polluting
C．to preventing; being   polluted	D．to preventing; polluted

7 . He has devoted all his life ______ the homeless children.

A．to helping

B．helping

C．to help

D．help

8 . The woman is always looking forward to ________ a rich life.

A．live

B．living

C．to live

D．lived

9 . Some students have trouble        grammar while others have difficulty        new words．

A．in；remember	B．for；to remember
C．on；remembering	D．with；remembering

10 . No one can prevent the plan __________.

A．from carrying out	B．to be carried out
C．being carried out	D．to carry out