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

1．What time do you usually get up? I usually get up at five o ________.  
2．Li Lei isn’t at school today. B ________ he is ill.  
3．Which bus do you t ________ to go to work?  
4．What do you know a ________ him?  
5．My son does his h ________ at 6:30.  
6．The children often play football at 4:00 in the a ________.  
7．My father goes to work very e ________ in the morning.  
8．What do you often eat for b ________?  
9．The bus usually l ________ at 8:00 and comes back at 12:00.  
10．Are you b ________ today? No. I have nothing to do.