读句子，将其与恰当的答句连线。

① How many book do you have?      A. It's on the desk.

② How many pencil boxes do you see?     B. I see 6.

③ Where is your book?     C. I have 17.

④ Is it on your desk?      D. OK!

⑤ Open it and see! E. No, it isn't.