根据所听内容选择合适的应答句。（听两遍）
(    )⑴A. Thank you.         B. I’m sorry.         C. Yes, please.
(    )⑵A. Is this a book?     B. Yes, it is.         C. It’s a book.
(    )⑶A. It’s a ruler.     B. This is a ruler.     C. That’s a ruler.
(    )⑷A. OK.                B. Yes , it is.        C. Thank you.
(    )⑸A. Yes, he is.        B. No, she isn’t.     C. Yes, she is.
(    )⑹A. It’s a lunch box.  B. It’s over there.   C. No, it isn’t.