21.I don’t know why she’s looking at me ______ she knew me.I

21.I don’t know why she’s looking at me ______ she knew me.I’ve never seen her before in my life.
A.as
B.although
C.even if
D.as if
22.After a long walk on a hot day,one feels ______.
A.exhaustive
B.exhausting
C.exhaust
D.exhausted
23.______ notebook and report that I promised you last week.
A.Here is the
B.Here are the
C.Is here the
D.Are here the
24.He ______ accomplish the task in time.
A.did
B.has
C.is
D.do
25.He works ______.
A.lone
B.lonely
C.alone
D.lonesome
26.I ______ go to bed until I ______ finished my work.
A.don’t/had
B.didn’t/have
C.didn’t/had
D.don’t/have
27.The management urged that the cost of production ______.
A.to be further reduced
B.was further reduced
C.be further reduced
D.should further reduced
28.All these dictionaries are a great help to you,______?
A.are they
B.aren’t they
C.are all these dictionaries
D.aren’t all these dictionaries
29.The ship,______ to a shapeless wreck,was hardly recognizable.
A.being reduced
B.reducing
C.reduced
D.having been reducing
30.Beneath our feet ______ that our life depends on for food and clothing.
A.the earth lay
B.the earth lies
C.lie the earth
D.lies the earth
31.If you live in Wuhan one day and in Shenyang the next,you ______ the change in temperature.
A.are certainly to feel
B.certainly feel
C.are to feel certainly
D.are certain to feel
32.When we reached the station,the train had still not arrived; so we ______.
A.needed not to hurry
B.needn’t have hurried
C.need not to have hurried
D.didn’t need to hurry
33.“I would have come sooner,but I ______ that you were waiting.”
A.didn’t know
B.hasn’t known
C.hadn’t know
D.haven’t known
34.he was a good runner so he ______ escape from the police.
A.might
B.succeeded to
C.would
D.was able to
35.I’m sorry,but I had no alternative.I simply ______ what I did.
A.must do
B.had to do
C.ought to have done
D.have to do
36.If he had followed the directions carefully in taking the medicine,he would have felt better ______.
A.much quicker
B.more quick
C.much quickly
D.more quickly
37.______ the beginning of the 19th century did scientists know that all matter is made up of atoms.
A.At
B.By
C.Up to
D.Not until
38.Three hours ought to be enough time,______?
A.oughtn’t three hours
B.didn’t they
C.shouldn’t it
D.shouldn’t three hours
39.I don’t allow ______ in my office and I don’t allow my family ______ at all.
A.to smoke…smoking
B.smoking…to smoke
C.to smoke…to smoke
D.smoking…smoking
40.On a small marble table in the center of her boudoir stands ______ vase.
A.a little exquisite antique brown Chinese porcelain
B.an exquisite little antique brown Chinese porcelain
C.an antique little exquisite brown Chinese porcelain
D.a Chinese antique little expensive brown porcelain

21.D
22.D
23.B
24.A
25.C
26.C
27.C
28.B
29.A
30.D
31.D
32.B
33.A
34.D
35.B
36.D
37.D
38.C
39.B
40.A