----____________when has he started boxing?----2006, I suppose.
| A．In | B．Since | C．Before | D．After |
I prefer _____ at home to _____ outside.
| A．staying; playing | B．to stay; play |
| C．staying; play | D．to stay; playing |
Is it easier to make plans _____ trips now?
| A．to | B．for | C．of | D．on |
The question is not easy _____.
| A．to answer | B．to be answered |
| C．answered | D．answering |
The classroom ______ 30 feet long.
| A．measures | B．is measured | C．has | D．has length |
As middle school students, we _____ the police to keep order.
| A．are used to help | B．used to helping |
| C．used to help | D．used to be helped |