初一英語練習(xí)題（請盡快回答）答完我給分.
（in the lost and found case）
A:can i help you?
b:i can't find my 1.( )
A:is it on the desk?
b:no,2.( )isn't.
A:is3.( )your backpack?
b:no,it4.( ).my backpack is 5.( ).that one is small.
A:what about this one?is it 6.( ) backpack?
b:no,mine is blue .this 7.( ) is green.
a:how about that one over there?
b:yse,8.( ) is my backpack.look,it has my name 9.( )it.thank you very much.
a:you're 10.( ).
信息：
found:is that your biack backpack?please call mary at 476-5988.
lost:my pencil case.blue and white.call tom at 456-8790.