1、Unit 3 A Healthy LifeIt 的用法练习一单项选择。1.Was it during the Second World War _he died? A.that B.while C.in which D.then2.Is _ necessary to take off our shoes when we enter the lab? A. everyone B.this C.her D.it 3. Is _ possible to fly to the moon in a spaceship? A.now B.that C.it D.man 4. I dont think _
2、possible to master a foreign language without much memory work. A.this B.that C.its D.it5.She heard of a terrible noise, _ brought her heart into her mouth. A.it B.which C.this D.that 6.Alice received an invitation from her boss, _ came as a surprise. A.it B.that C.which D.he7.Does _ matter if he ca
3、nt finish the job on time? A.this B.that C.he D.it8.Toms mother kept telling him that he should work harder, but _ didnt help. A.he B.which C.she D.it9.The weather turned out to be very good, _ was more than we could expect. A.what B.which C.that D.it10._is a fact that English is being accepted as a
4、n international language. A.There B.This C.That D.It11.I hope there are enough glasses for each guest to have _. A.it B.those C.them D.one12.It was about 600 years ago_the first clock with a face and an hour hand was made. A.that B.until C.before D.when13.I hate _ when people talk with their mouths
5、full. A.it B.that C.these D.them14.It was only when I reread his poems recently_ I began to appreciate their beauty. A.until B.that C.then D.so15.It is the ability to do the job _ matters not where you come from or what you are. A.one B.that C.what D.it16.It _ you that _ to blame. A.is;is B.is; are
6、C.are;are D.are;is17.Was_that I saw last night at the concert? A.it you B.not you C.you D.that you 18._ electricity plays such an important part in our life? A.Why is it that B.Why is it C.Why it is that D.Why is that 19.It was _ he said _ disappointed me. A.what;what B.that;that C.what;that D.that;
7、what 20.It was in the lab _ was taken charge of by Professor Harris _ they did the experiment. A.which; that B.that; what C.whom; that D.which; where二.分析it成分，辨清相似句型。21._ is well know to us all that the earth is round._ is well known to us all, the earth is round. A.That B.As C.It D.Which22. _doesnt
8、matter much whether hell come to the party. I feel _ an honour to be invited to speak here. A.this B.it C.that D.what 23. _ no wonder that he has passed the exam. _ no need for you to wait here. A.There being B.It was C.It is D.There is24. Was it the house _ Abraham Lincoln was born? Was it in the h
9、ouse _ Abraham Lincoln was born? A.that B.where C.which D.both A and B 25. Its very kind _ you to help us. Its very important _ you to keep the balance of nature. A.for B.of C.to Dwith .26. It is no good _ such a thing. Its of no importance _ such a thing. A.do B.to do C.doing D.done27.Its time that
10、 we _ to school. It is the second time that we _ to Beijing. A.go B.went C.have been D.have gone28.Its tomorrow _ he is going to Beijing. It was 8 oclock _ he went to school. A.that B.when C.before D.since29.It is 3 years _ he joined the army. It will be 3 years _ we meet again. A.before B.after C.since D.whenKEYS：1-5ADCDB 6-10CDDBD 11-15DAABB 16-20BAACA 21.CB 22.BB 23.CD 24.BA 25.BA 26.CB 27.BC 28.AB 29.CA
