1.Soon they saw the boy ___ in the crowd.
    A.disappear
    B.to disappear
    C.disappears
    D.be disappeared
2.I'm pleased to see the problem ___ so quickly.
    A.settled
    B.having been settled
    C.be settled
    D.settle
3.I saw him ___ behind the tree, thinking.
    A.sat
    B.seated
    C.seating
    D.seat
4.He was seen ___into the bedroom.
    A.steal
    B.be stealing
    C.had stolen
    D.stealing
5.She was seen ___ the room.
    A.enter
    B.to entering
    C.to enter
    D.be entering
6.We set about ___ and succeeded ___ our task in time.
    A.to work;to finish
    B.working;finishing
    C.to work;finishing
    D.working;in finishing
7.She seemed ___ at the news.
    A.surprising
    B.surprise
    C.surprised
    D.to surprise
8.You look light-hearted. Nothing seems ___ to you.
    A.to happen
    B.to have been happened
    C.to have happened
    D.to be happened
9.I spent hours ___ your composition.
    A.to look through
    B.look through
    C.looking through
    D.looked through
10.Much time is spent ___.
    A.writing
    B.to write
    C.to writing
    D.to be writing
11.We advise them to stop ___ such a dangerous plan.
    A.to think of carrying on
    B.to think of carrying out
    C.thinking of carrying off
    D.thinking of carrying out
12.They stopped ___ when they met in the street.
    A.talk
    B.talking
    C.to talk
    D.talked
13.I hope you'll succeed ___ this plan.
    A.fulfill
    B.to fulfill
    C.fulfilling
    D.in fulfilling
14.The day we had looked forward to ___ at last.
    A.coming
    B.come
    C.came
    D.comes
15.He suggested ___ the meeting to an end.
    A.bring
    B.to bring
    C.bringing
    D.on bringing
16.I tried ___ it was no good ___ into the habit of smoking.
    A.making him understand;to get
    B.making him to understand;to get
    C.to make him understand;getting
    D.to make him to understand;getting
17.He couldn't open the front door, so he tried ___ the back door.
    A.push
    B.to push
    C.pushed
    D.pushing
18.This instrument is used ___ machines.
    A.checking
    B.to checking
    C.to check
    D.to be checked
19.It is known to us all that bamboo can be used to ___ various
    things.
    A.making
    B.make
    C.be made
    D.being made
20.He was not used to ___ by air, so he felt unwell.
    A.travel
    B.travelled
    C.have travelled
    D.travelling


lled
    D.travelling


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