【高一英语小问题..~4.1.apieceoffurniture(s)(家具)加不加s?2.strikesbin/on哪个是硬?哪个是软?3.setfireto/catchfireto区别?4.watchsbdo/done区别?5.Ifcitynoises()fromincreasing,peoplewillhavetoshout()e】

　　高一英语小问题..~4.

　　1.apieceoffurniture(s)(家具)加不加s?

　　2.strikesbin/on哪个是硬?哪个是软?

　　3.setfireto/catchfireto区别?

　　4.watchsbdo/done区别?

　　5.Ifcitynoises()fromincreasing,peoplewillhavetoshout()evenfacetofaceinthefuture.

　　A.arenotprevent;tobeheard

　　B.don'tprevent;tohear

　　C.willnotbeprevent;tohear

　　D.don'tprevent;tobeheard

　　正确答案是A,

　　D为什么不可以?为什么不能用don't?