21.Was the thief noticed ____ the house?

　　A.leave B.to leave C.leaving D.left

　　22.A student began to make faces ____ the other students ____.

　　A.to make， to laugh B.make， laugh C.to make， laugh D.make， to laugh

　　23.He often helps me ____ housework and I find him ____ friendly.

　　A.do， to be B.to do， be C.do， be D.doing， to be

　　24.I ___ you to see him again.

　　A.hope B.suggest C.wish D.propose

　　25.I suggest ____ a plan.

　　A.him making B.him make C.him to make D.he makes

　　26.She did all she could ____ him.

　　A.save B.to save C.do save D.saving

　　27.I'm busy ____ my lessons.

　　A.review B.to review C.reviewing D.for reviewing

　　28.I'm ____ to spell the word.

　　A.easy B.hard C.difficult D.glad

　　29.The group leader told me that he had a meeting ____.

　　A.to attend B.attend C.attending D.to be attended

　　30.My cousin hired a room ____.

　　A.to live B.to live in C.living D.to be lived

　　31.Hurry up ____ downstairs.

　　A.to go B.going C.and go D.go

　　32.He ____ his daughter to swim with her.

　　A.promised B.allowed C.permitted D.let

　　33.The prisoner had no choice but _____ .

　　A.obey B.to obey C.obeying D.obeyed

　　34.Do you like to go boating now? _______.

　　A.Yes， I like B.Yes， I like to C.Yes， I will like D.No， I like not

　　35.I had rather ___ on my feet than ____ on my knees.

　　A.die， live B.die， to live C.to die， live D.to die， to live

　　36.At that time I could not help but ____ the medicine.

　　A.take B.to take C.taking D.took

　　37.I did no more than _____ the work.

　　A.finish B.to finish C.finishing D.finished

　　38.Why ___ some shopping?

　　A.do not do B.not to do C.not do D.don't do

　　39.The girl was ____ frightened to move.

　　A.so B.such C.very D.too

　　40._____ a teacher of the people we must first be their pupils.

　　A.In order to be B.Be C.In order that D.So to be