—_____ does Kangkang meet his friends?
—Four times a month.
| A．How often | B．How long |
| C．When | D．What time |
The boy likes playing _____ basketball very much.
| A．a | B．an | C．the | D．/ |
Bob often _____ his homework after dinner.
| A．do | B．does | C．doing | D．to do |
The Browns usually drive to the park on Sundays. But today they go to the park_____ foot.
| A．in | B．on | C．by | D．of |
Please be quiet.My grandfather___________ .
| A．sleep | B．sleeps |
| C．is sleeping | D．are sleeping |