It is an English book.写出缩略形式

It is an English book.写出缩略形式 it is[缩略形式 It's an english book.复数形式 改为复数形式 Is that an English book?What"s this in English?It is It is an English book.（复数） It is an English book . 肯定回答 Is it yuor an English book? an english book复数形式 That is an English book的复数形式 That is an English book.给为复数形式 name is ,it is,do not,where is,they are.写出缩略形式 连词成句:is,an,english,book,it?