1.__,we could not have…… 有补充

1.__,we could not have…… 有补充
1.__,we could not have finished the work on time.
A.if they do not help us B.was it not for their help
C.should they offer to help us D.but for their help
3.without air ___no wind or rain.
A.there will be B.there have been C.there would be D.there is
4.___how to operate a washing machine,i had to ask my wife to show me the correct procedures.
A.not known B.not to know C.not knowing D.having not know
5.He said."time is running short.you___now."
A.have better leave B.better leave C.had better leave D.had better to leave
6.being in no great hurry,___
A.we went the long route with scenery
B.the long,scenic route was our preference
C.we took the long,scenic route
D.our preference was taking the long,scenic route
7.i urged that he___these steps
A.takes B.took C.take D.taking
8.their retail business in Asia __rapidly since the early 1900s.
A.has expanded B.has extended C.has stretched D.has prolonged
9.Smallpox,which used to be a severe epidemic disease,has been completely___
A.get rid of B.moved C.wiped D.wiped out
10."It's time you stopped___on campus and did some reading,"Mr.Reed told his son one day
A.looking around B.meddling away C.going away D.punched
11.Susan ___a weakness in her opponent's defense during the first round of the game
A.swayed B.looked C.spotted D.grabbed
12.I___her ability to start conversations with people she has never met before.
A.invent B.envy C.unlike D.refuse
13.Only the hope that the rescuers were getting nearer ___the trapped miners.
A.held B.moved C.sustained D.strengthen
14.Leave a ___ of one inch on each side of your essay.
A.space B.margin C.room D.block
15.The mirror ___his image perfectly.
A.reflected B.found C.saw D.represented

1A
3A
4C
5A
6C
7D
8A
9D
10A
11C
12B
13A
14B
15A