1.A: Do you have a pencil?
   B: Yes, I do.
   A: Show me your pencil, please.
   B: Here you are.

2.A: Do you have a ruler?
   B: Yes, I do.
   A: Put your ruler in your hand, please.
   B: I put the ruler in my hand.

3.A: Do you have a book?
   B: Yes, I do.
   A: Open your book, please.
   B: I open the book.

4.A: Do you have a pencil-case?
   B: Yes, I do.
   A: Put your pencil-case on your head,please.
   B: I put the pencil-case on the head.