It's my English book(对 my 提问)

It's my English book(对 my 提问) this is my English book对my English book提问 It's my an English book I lost my English book yesterday对my提问是什么? My English book is my (backpack.)对括号部分提问 My English book is here对here怎样提问? We are reading an English book.对English book提问 My fatrher is 把It's a book改成一般疑问句 对in the bedroom进行提问 对my dog进行提问 对my sist This is my book.对my提问 It's my backpack.对my backpack提问 Oh,it's my( ).1、book 2、dictionary It's an English dictionary 对“my cousin's ”提问 It's my cousin's bike.( )( )is it?