两个英语问题That is an English book ,isn't it 这里it为什么不用that?I am s

英语 急用a或an填空.5.That's()English book.It isn't a Chinese book.6 1.( )-Is that ____ book?-No,it isn't .It's ___ book.A.she;I 英语复数形式It is an English dictionary.That isn't my brother.She 改为复数形式 Is that an English book?What"s this in English?It is 单项填空 1.( )-Is that ___ book?-No,it isn't .It's __ book.A.she is that Tara?no,it isn`t it`s Tina It isn‘t（ ）key,it is（ ）gold ring （填 a 或 an） what’s that?it‘s 找错误句子That not is an English book.You are right.It's adiction It's the very book that I am looking for... That's an interesting story ,_______? A.isn't it B.isn't tha 英语填空A:Is that Robert's bicycle?B:No,it isn't.His bicyclre is That"s( a) useful book .I have read it already.为什么不用the