This is a book (对a
This is a book (对a
This is a book.对a book进行提问
This is a book
This is a book.对book 提问时what is it 对,还是what is this?
Is this a book?" "Yes,this 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)
this is a book.(对划线部分提问)(划线部分为a book)
"This is a book of mine."和"This is a book of me."哪句话对?为什么?
This is a book 对划线部分提问 (划线部分 BOOK)大神们帮帮忙