英语语法高手请进1.I happened to _____the news on TV.A.know about B.l

英语语法高手请进
1.I happened to _____the news on TV.
A.know about B.learn about C.know D.learn
2.Be quick,the door_____!You'll_____just in time .
A.is closing;make it B.will close;catch it
C is closed;miss it D.has closed;go out
3.-Where do you think_____he____the computer?
-Sorry,I have no idea.
A./;bought B.did;buy C.does;buy D.has;bought
4.This question has been discussed ____.
A.some time B.for some times
C.sometimes D.for some time
5.It must have rained last night,____?
A.mustn't it B.needn't it
C.hasn't it D.didn't it
6.If something important happens the whole world___it.
A.know B.knows C.are going to know D.knew
7.He isn't ___today so he stays home.
A.good B.nice C.himself D.better
8.My darling,you____foolish..
A.will be B.are C.is D.are being
9.Hey,Man,you___foolish.
A.will be B.are C.is D.are being
10.I am late,___I?
A.amn't B.won't C.aren't D.don't
11.Look,in ____your girl friend.
A.is coming B.came C.come D.comes
12.Yesterday he did a lot of_____.
A.written works B.writing C.writings
13._____,he asked the teacher.
A.Not knew how to do
B.Not knowing what to do
C.Didn't know what to do
D.Because not know how to do it
14.It is no good ____.
A.worrying B.to worry C.to be worry D.for worries
15.I really don't know____to do with the broken vase.
A.what B.that C.how D.which
(请写明理由)

1.D kown是知道了解熟悉的意思,而learn作为及物动词时除了有学习的意思外还有获悉的意思,选它比较符合句意和用语习惯.learn about仅仅是学习的意思,kown about是知道了解.
2.A句意是:快点,门要关了,你只是刚好赶上而已.第一空用ing表示动作正在进行,第二空是习惯用语
3.A you think是个插入语,可当它不存在.这样就不难选出是A 4.B 用完成时要用for,time表示次数时是可数名词
5.D
6.C是个虚拟语气的句子,复句用一般现在时主句就要用一般将来时,the whole world实际上是全世界的人,所以谓语动词用复数
7.C be oneself是状态好的意思
8.B亲爱的,你真可爱...
9.D做得很愚蠢用being foolish
10.A
11.A
12.A written works是书面作业的意思
13.B
14.B
15.A