---Where is Mr. Wu, do you know?
---Well, it’s hard to say. But I saw him ___________ a football game just now.
| A．to watching | B．watching |
| C．to watch | D．watched |
We have to________our sports meeting because of the heavy rain．
| A．put off |
| B．put out |
| C．put on |
| D．put up |
My brother________play basketball．But now he likes playing baseball．
| A．used to |
| B．is used to |
| C．is used for |
| D．was used to |
Tom，your room is too diay．You must________．
| A．clean up it |
| B．clean up them |
| C．clean them up |
| D．clean it up |
They arrived at the finishing line________the same time．We didn’t know who the winner was．
| A．on |
| B．in |
| C．at |
| D．for |
The boy started to play the guitar________the age of seven．
| A．for |
| B．in |
| C．at |
| D．to |