This is s book.(a book提问)
This is s book.(a book提问)
this is a book 提问
This is a book.对a book进行提问
This is a book.(It's,Its)
This is Jim's English book.划线 Jim's 提问.
This is a book
This is a book.对book 提问时what is it 对,还是what is this?
this is (Tom's )book!对括号内提问
【英语】__my book.__your book.A.This is;That's B.This's;That's C
This is Mary's book
< >book is mine,and< >are Lily's book's.A this,those B This,
This is a book,It's an English book.What's this?急.