1.Strange ______ his behavior may be,there is a very good reason for it.

1.Strange ______ his behavior may be,there is a very good reason for it.
A.althoughB.even ifC.thatD.as
2.The majority of doctors ______ smoking is harmful to health.
A.are believedB.had believedC.has believedD.believe
3.Professor Chen asked us to write ______ essay on individual differences in second language learning.
A.a no more than two-thousand-wordB.a less two-thousand-words
C.a less than two-thousands-wordsD.a no more two than thousand word
4.He ______ with us last night.
A.would have liked to goB.should like to be goingC.should be liked to goD.would like to go
5.There isn’t anything wrong with the radio,______?
A.is thereB.is itC.does itD.does there
6.My uncle,Sam,______ manager of the firm.
A.has just madeB.is just being madC.has just been madeD.is just made
7.His English teacher recommends that he ______ a regular degree program.
A.beginsB.beginC.will beginD.is beginning
8.You must be hungry,______?
A.must youB.mustn’t youC.are youD.aren’t you
9.Learning how to repair computers takes a long time,______?
A.isn’t itB.aren’t theyC.doesn’t itD.don’t they
10.The president,accompanied by his assistants,______.
A.have arrivedB.are arrivingC.had arrivedD.has arrived
11.Need he come at once?Yes,he ______.
A.mustB.must notC.needD.may
12.It is imperative that you ______ there in person.
A.areB.wereC.beD.will be
13.With all this work on hand,he ______ to the cinema last night.
A.mustn’t goB.wouldn’t goC.oughtn’t goD.shouldn’t have gone
14.he was a good runner so he ______ escape from the police.
A.mightB.succeeded toC.wouldD.was able to
15.The public ______ generous in their contributions to the earthquake victims.
A.isB.wasC.areD.has been
16.“Did you go to see the football match yesterday?”“No.I didn’t feel well,but I would have gone if I ______.”
A.didB.haveC.wouldD.had
17.______ you think he ______ back by dinner time?
A.Do/have comeB.Did/will have comeC.Does/will comeD.Do/will have come
18.Supposing this ship ______ ,do you think there would be enough life jackets for all the passengers?
A.was sinkingB.has sunkC.were to sinkD.sunk
19.____ he was putting on his uniform,the officer found that one of the sleeves was torn.
A.SinceB.UnlessC.AsD.Before
20.Barry can hardly drive a car,______.
A.so can’t MollyB.can’t Molly eitherC.Molly can’t tooD.neither can Molly
21.Nobody will believe how difficult his work has been ______?
A.will heB.won’t nobodyC.will theyD.won’t they