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 |
Other businesses, such as insurance companies, are more concerned with acquiring a central position so that they are ______ to the urban population.
| A．beneficial | B．relevant | C．independent | D．accessible |
I always think it was such a(n) ______ for me to have spent a day with kids in the Children’s Home.
| A．certificate | B．assessment | C．privilege | D．arrangement |
When delivering a speech, you should adjust your language to the age of your ______ audience.
| A．target | B．entry | C．boundary | D．concept |
Is this the reason _____ in the report for her success in the job ?
| A．she explained | B．what she explained |
| C．how she explained | D．why she explained |
The extra room _______ very useful when we had visitors.
| A．was proved | B．proved | C．has been proved | D．has proved |