.Hardly could he _________this amount of work in such a short of time.
| A．live through | B．look through | C．come through | D．get through |
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 |
If you keep on, you’ll succeed _______.
| A．in time | B．at one time |
| C．at the same time | D．on time |
We had a hard life _____ in my childhood.
| A．at a time | B．at all times |
| C．at one time | D．at any time |