[解析]
M:It's Saturday tomorrow.Do you have any plans?
W:Busy as usual.I will send Annie to her piano class at nine tomorrow morning and then take Michael to hospital.Besides,I will make a birthday cake for Lynn.Tomorrow is her 5th birthday.
M:Why isn't John giving a hand?
W:An international meeting is going to be held in London next week. He is leaving tomorrow and will be back in two weeks.
M:I see. Give me a call if you need any help.