A:Hello,Dad.I have come back home.(81) ?
B:I'm in the supermarket now.What's up?
A:Er,it's a special day today,isn't it?
B:(82) .It's Father's Day.
A:Do you have a plan?
B:Not yet.(83) ?
A:What about spending the day with my grandpa?
B:Good idea.What can I buy for him?
A:(84) .His sports shoes are too old.
B:OK.Then wait for me at home.
A:(85) ?
B:I will be back in an hour.