初一英语完形填空（每空一次）,急,

初一英语完形填空（每空一次）,急,
1.A:What are you doing?
B:I'm () my plane.() is wrong () it.Could you help me () it?
A:I'm () .I can't help you.I'm very busy now.
B:Well,do you () a knife?() is at home.
A:Yes,I have one.
B:May I () it?
A:Certainly,here you are.Please give it () soon.
B:I thinkI () do that tomorrow afternoon.