Ann:Excuse me.
Bill:Yes?
Ann:I_____ that my eraser?
Bill:No,it's my eraser.
Ann:W_____that in your pencil-box?
Bill:It's a ruler
Ann:W_____ my pencil?
Bill:Is it i_____ your box?
Ann:No.Three pens are in it.
Bill:What's t_____ in your desk?
Ann:It's a book.
Bill:L_____!the pencil is in your book.
Ann:You're r_____.thank you very much.
Bill:That's OK.
