一道初二英语题 Fill in the blanks in the e-mail message. Use"I'm+verb+ing"or "I have to+verb"
Hi Henry,
Thanks a lot for the invitation. I'm sorry I can't visit next week.
On Monday, I have to（go to the doctor).On Tuesday ,I'm ( ) withmy friends. On Wednesday,I have to () my dad.On Thursday,I'm studying for ().Andon Friday ,() on vacation with ( ).Please call me after the vacation.
Tony