Our college is going to choose some ______ from the graduates to serve the poor village during the summer vacation．
| A．volunteers | B．firefighters | C．employers | D．prisoners |
We finished the run in less than half the time ____.
| A．allowing | B．to allow |
| C．allowed | D．allows |
---Shall we go out for a walk?
--- Sorry. This is not the right ____ to invite me. I am too tired to walk.
| A．moment | B．situation |
| C．place | D．chance |
I _____ it as a basic principle of the company that suppliers of raw materials should be given a fair price for their products.
| A．make | B．look |
| C．take | D．think |
Later in this chapter cases will be introduced to readers __ consumer complaints have resulted in changes in the law.
| A．where | B．when |
| C．who | D．which |
Jack is late again. It is ___ of him to keep others waiting.
| A．normal | B．ordinary |
| C．common | D．typical |