1.Today we use machines _ us do most of our work.

1.Today we use machines _ us do most of our work.
A.to help B.help C.helping D.helped
2.They found their new books _ .
A.to take away B.taking away
C.taken away D.took away
3.Although he doesn't like most sports,he _.A.enjoys swimming B.is a swimmer C.like swimming D.likesto swim
4.I hope that you don'mind _ this evening.A.going on foot B.go on foot
C.will go on foot D.to go on foo
5.They keep on _ us letters.
A.to send B.send C.sending D.sent
6.Ihope _ him as soon as possible.
A.see B.seeing C.to see D.to have seen
7.China is a _ country.A.developing B.develop C.developed D.being developed
8.The window is _ .
A.break B.to break C.breaking D.broken
9.Things keep _.A.changed
B.changing C.being changed D.change
10.The classroom needs _.
A.clean B.cleaned C.to clean D.cleaning
11.I find this book _.A.interesting
B.interested C.interest D.more interest
12.She enjoys _ to light music.
A.on listen B.to listening C.listening
D.listened
13.She told me that she had decided _ again.A.be not B.not be late
C.not to be late D.to not be late
14.we're going to help _ the trees.
A.watered B.watering C.to waterinf
D.water
15.He likes hearing his own voice.He never stops _.
A.telling B.talking C.to tell D.to talk

1.A 不定式表目的
2.C 书被拿走,found sth+状态
3.A enjoy+doing,并且第三人称单数
4.A mind+doing
5.C keep on+doing sth
6.C hope to do
7.A developing发展中国家,developed发达国家
8.D 窗户坏了,就是broken,固定说法.
9.B keep changing,keep doing,并且主语和change是主动的关系,事情在变,而不是被变.
10.D need doing是主动表被动的一个典型,表示教室该被收拾了.
11.B 这些书很interested,find sth+adj
12.C enjoy doing sth
13.C decide to do,否定是：decide not to do
14.B help的几种用法：help sb do sth,help with+n ,help doing sth.,或者help sb to do sth
15.B 说话在这里是talk,因为tell是及物动词,后面必须加宾语.另外stop doing是指停止正在做的事；stop to do是停止手上的事去做别的事.stop talking表示停止说话.