Is this a book?" "Yes,this is."
Is this a book?" "Yes,this is."
ls this a book Yes,this is.谁会修改?
Is this your book?Yes,it is
This is a book
is this your book?yes,() A.this is B.it is
Is this book ( yes,It belongs to ( ).
is this you book,mike?yes,______are
改成复数句This is a book.That isn't an egg.Is this a book?Yes,is
this is a book 提问
This is a interesting book
This is (a math) book.
This is s book.(a book提问)