Complete the dialogue

Complete the dialogue
A:Are you free_____ Sunday morning,John?
B:Yes.I have nothing _____ _____.
A:What're you _____ _____ do?
B:Nothing much._____?
A:I'm going to work on the farm_______ other student.
B:______ I come?
A:Certainly!You're_____
B:Where are we going to meet?
A:We're going to meet_______ the road outside the school gate at 7:30.Don't be late.
B:OK.