The boy started to play the guitar________the age of seven．
| A．for |
| B．in |
| C．at |
| D．to |
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 |
Tom，your room is too diay．You must________．
| A．clean up it |
| B．clean up them |
| C．clean them up |
| D．clean it 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 |
We have to________our sports meeting because of the heavy rain．
| A．put off |
| B．put out |
| C．put on |
| D．put up |
—Could you tell me how cakes?
—Sorry，I don’t know．
| A．make |
| B．making |
| C．to make |
| D．made |