It's _____(a,an) useful and ____(a,an) unusual record.It's raining ____ (大) outside now.What's your ____ (重)?I know ____ ____ ____ ____ ____ ____ (幸福生活是什么样的).谢谢、能说下第1题第1空为什么用a么？

Could I use your dictionary?Yes,you can.It's a _____ (use) tool. There's something wrong with the fridge.Stop _____ it A.using B.to use C.use D.used It's an _____ in the bag.A.book B.pear C.egg What's this?-It is _____.A.an ID card B.a orange C.ruler D.an UFO it's very easy _____ English and it's important ____ it .A.study ;say B.to learn;to use C.to study ;use-------SOS啊 ,重要的是为什么. If we don't put an _____ in a microwave,we mustn't use it.A.thing B.bowl C.food D.object It's going to rain.You should _____ an umbrella with youIt’s going to rain.You should _____ an umbrella with you.A.take B.bring Could I use your computer for a few moment,please?_____.I'm not using it myself.A.Come on B.It dependsC.Go aheadD.That's great I think it's _____ useful advice ,so I always remember it.A.a B.an C.the look at _ book,it's _____ english book.a.the.the b.an the c.the an. There is a U and anS in () use. Look at _____ car in _____ first photo.It's _____English car.A.a;the;a B.the;the;an C.A.a;the;a B.the;the;an C.a;the;an D.the;a;an it's very easy to use it =it's a ____ of___ to use it(同义句) Is it an animal?Right,it's a _____ of the cat family.kind number member animal It's _____ sunny today.A.a B.an C./ A和C貌似都对,我选哪个?急! it's an interesting place _____(visit)正确形式 What colour is ______ orange?－It’s _____ orange.A.an,an B.an,the C.an,/ D./,anWhat colour is ______ orange?－It’s _____ orange.A.an,an B.an,the C.an,/ D./,an 正确为c,为什么? It's no use _____ you didn't know.A.pretending B.pretends C.pretend D.to pretend知道选A,为何