lt’s a book改为复数句

lt’s a book改为复数句 lt this a book 改成复数句 lt’s a book改为否定句,一般疑问句,并做否定回答 what is this ?lt’s a sheep 改为复数形式 what isit?lt is a box改为复数句 把Where’s my book改为复数句. It's an English book.（改为复数句） lt is my donkey.改为复数句 it's a new book 改为否定的复数形式 it's a naw book改为复数形式 there is a book on the desk改为复数句 this is a chinese book改为复数句