it's a naw book改为复数形式

it's a naw book改为复数形式 it's a new book 改为否定的复数形式 lt’s a book改为复数句 It's a calculator改为复数形式It's a pen.It's my key.That's a clock.It's her book都改成复数形式 It's an English book.（改为复数句） It is Mike 's book改为复数形式 It‘s a pear 改为复数句 It's a photo.(改为复数句) It's a notebook改为复数句子 It‘s a nice photo 改为复数 It's a good dictionary.改为复数 英语复数It's a potato改为复数形式 改为复数；WHOSE BOOK IS IT What's this?It's a pen.(改为复数句) it 's a book about London改为一般疑问句 It,s a new toy bus.改为复数形式. It's a new bus.改为复数句 It's a goat.(改为复数句型）