This isn't an English book.变复数.Are they rulers?变单数.How is he?变成复数还是单数啊,应该怎么变

this just isn't This isn't just the This isn t a German car ,It is___English car,A,a B,an C,theD,one -Isn’t it supposed to be very cold in Xi’an this time of year? This ( )of keys isn't this.补充 This ( )of keys isn't this.补充 isn't it an elephant?怎么回答 英语翻译this isn't [ ] [ ] [ ] the lock. this just isn't working 为什么 I hope this isn't catching. This isn't your cue.英语翻译 This water isn't good to 同义句改写1.I study English very hard.I an very ___ ___ English.2.they both study very hard.___ of ___study very hard.合并为一句Tom is 15.Jack is 17.Tom isn't ___old ____Jack.根据汉语意思完成句子1.英语变得越来越有用Englis How is he?Her sister is a student.This isn't an English car.该复数形式 this is__movie I saw last week Isn't it__educational onea;the theb;the ac;a thed;the an This is ________great weather,isn't it?A a.B.an.C the.D 不填为什么 改成复数句This is a book.That isn't an egg.Is this a book?Yes,is is.Your picture is very good. Don't worry.This isn't the f____result