1.In recent years______global warming is becoming _____concern for people all over the world.(C)A.the;the B/;/ C./;a Dthe;/2.These countries____too many wars since ancient times.(C)A,went through B.have gone by C.have gone thrugh D.went by3.Students

1.In recent years______global warming is becoming _____concern for people all over the world.(C)A.the;the B/;/ C./;a Dthe;/2.These countries____too many wars since ancient times.(C)A,went through B.have gone by C.have gone thrugh D.went by3.Students
1.In recent years______global warming is becoming _____concern for people all over the world.(C)
A.the;the B/;/ C./;a Dthe;/
2.These countries____too many wars since ancient times.(C)
A,went through B.have gone by C.have gone thrugh D.went by
3.Students should form the habit of____everything important in class.Which of the following can't be put in the blank?(D)
A.putting down B.taking down C.setting down.D.tearing down
4.This is the first time I ___my first picture with my own hands.
It is time that you _____a picture for me.(B)
A.took;took B.have taken;took C.took;will take D.will take;have taken
.Rescuers are ____for the safety of two men tra+
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第五题重发。
5.Rescuers are _____for the safety of two men trapped in the time.
A.grateful B.concerned C.extreme D.frightened
6.Knowing the result of the exam,he went home and lay in bed,______(A)
A.upset B.was upset C.felt upset D.and upset
7.Anne didn't know what being alone meant____she hid upstairs in the small house.(A)
8.You'd better _____your scores and see if you have passed the exam.(A)
A.add up B.add up to C.add to D.set down
9.I missed the first part of the film.It was really a pity.
You____home half an hour earlier.(D)
A.should go B.must have gone C.should leave D.should have left.

1.In recent years______global warming is becoming _____concern for people all over the world.(C)A.the;the B/;/ C./;a Dthe;/2.These countries____too many wars since ancient times.(C)A,went through B.have gone by C.have gone thrugh D.went by3.Students
1、Global warming是固定词组,全球变暖；concern,意思是关心的事,重要的事,此时为可数名词而且不是特指的,所以前面要有不定冠a.
2、此处的时态应为完成时,标志是since；through,副词,意为经历过.
3、这句话的意思是学生应该养成在课堂上记下重要的事情的习惯.A：记下、放下的意思,符合题意.B：写下、记下、病倒的意思,也符合题意.C：记下、写下的意思,符合题意.D：拆除、扯下、诋毁的意思,与题意不符,这道题就是要选出不正确的一项,所以选D项.
4、It is/was the first time……是与完成时在一块用的.过去进行时是表示某个时间正在进行的动作；It's time + that clause,that可省略,从句中的谓语动词需要用虚拟,有两种形式：①用动词的过去式(be用were)；②用shoud + 动词原形（should不能省略),此时为虚拟语气.综上,选B.