＿＿＿＿＿ for your brother, I would not have gone to see Mr. Wang.
| A．If it is not | B．Were it not | C．Had it not been | D．If they were not |
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 |
If you keep on, you’ll succeed _______.
| A．in time | B．at one time |
| C．at the same time | D．on time |