题目内容：

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 ( ) with my friends. On Wednesday,I have to ( ) my dad. On Thursday,I'm studying for ( ).And on Friday ,( ) on vacation with ( ).Please call me after the vacation.
Tony

优质解答

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 ( hiking ) with my friends.On Wednesday,I have to ( visite ) my dad.On...