We enjoy______the moon in the open air on the Mid-autumn Day.
| A．to see | B．seeing | C．to watch | D．watching |
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 |
The teacher said he needed _____ boys besides his students _____ the classroom.
| A．20 other; clean | B．20 more; to clean |
| C．20 more; cleaning | D．another 20; clean |