Children’s brains can’t develop properly_______ they lack protein(蛋白质).
| A．when | B．since | C．because | D．unless |
The day before yesterday the police including one officer ____ searching for the murder in that mountain.
| A．is | B．were | C．are | D．was |
This school is _______ for experienced teachers.
| A．in need | B．badly off | C．in sight | D．at ease |
John thinks it won’t be long he is ready for his new job.
| A．when | B．after | C．before | D．since |
—How do you find my idea?
—_______.
| A．By opening your notebook. | B．I don’t like it a bit. |
| C．You showed it to me. | D．When I came in, I found it. |
We’ll look into the case as soon as we can. Just be ________, please.
| A．slow | B．silent | C．patient | D．comfortable |