1. I'm good at _____(swim).
2. Everyone in our class _____(like) to play this game.
3. Mr Li told us _____(not play) on the road.
4. I want to be a doctor when I'm _____(old).
5. That baby is ten _____(month) old.
6. It is difficult _____(improve) yourself.
7. Yesterday my aunt _____(buy) me a good diary.
8. I'll try _____(write) to you quickly.

     One day, Mr. Li was    1     a book in his office after school when a ball broke the window
and flew in.. The ball    2     him on the head. So he took the ball and came downstairs to see
who threw the ball .He met a boy at the doorway and the boy said that he threw it just now.
The boy said     3    to Mr. Li and Mr. Li praised the boy for his honesty. At last Mr. Li told
the boy to be more careful next time. The boy    4     him and said goodbye to him, running
away    5     the ball.
1._____ 2._____ 3._____ 4._____ 5._____ 

A. walk      
B. walking      
C. walked      
D. to walk

[     ]

A. at
B. on
C. for
D. in