用括号中所给词的适当形式填空
1. He __________(not do) his homework on Sunday morning.
2. Yesterday I __________(visit) an old friend of mine.
3. His mother wants her little child __________(drink) milk every day.
4. Tina didn't come only because of her __________(ill).
5. Having a balanced diet is a matter of great __________(important)．
6. France is a good place __________(go) sightseeing.
7. Mr Wang is __________(leave) for New York tomorrow.
8. He just finished __________(write)a letter to his friend.
9. -I'm sorry I forgot __________(post) your letter on my way home.
-That's OK.I will do it myself this afternoon.
10.I'm thinking about __________(go) to the north for my holiday.
