[解析]
A B
M:This weekend is Christmas.Do you have any plans?
W:Not really.In China not all people celebrate this holiday,so I've never thought of celebrating it.
M:Since you don't have any plans,why not join us in my home and spend a day with my family?
W:Oh,how kind you are!But won't that be too much trouble for your parents?
M:No.They're preparing for a gathering anyway and I'm sure they'll like to have a guest from China.I'll give them a call so it won't be a total surprise.
W:Thanks for your invitation then.