问一些英文题目,要讲理由.

问一些英文题目,要讲理由.
1.First the paper _____ and then the sticks.
A.is on fire B.catch fire C.were on fire
2.The police _____ the thieves.
A.has catched B.have caught C.have catched
3.I'd rather you _____ do it
A.won't B.don't C.didn't
4.It is important that he _____ placed in an appropriate job.
A.is B.be C.were
5.--Hey,look where you am going?
--Oh,I'm terribly sorry._____
A.I'm not noticing B.I wasn't noticing C.I haven't noticed
D.I don't notice
6.If he had worked hard,he _____ in the exam.
A.would have succeeded B.would succeeded C.had succeeded
D.succeeded
7.--I stayed at a hotel while in New York.
-- Oh,did you?You _____ with Barbara.
A.could have stayed B.could stay C.would stay