.
As the newspaper reported, the talks were held in an open, friendly, cooperative and constructive ______.
| A．environment | B．atmosphere | C．condition | D．situation |
He is a very honest official and never _____ any gifts from the people who sought his help.
| A．accepted | B．received | C．carried | D．excepted |
My camera can be _____ to take pictures in cloudy or sunny conditions.
| A．treated | B．adopted | C．adjusted | D．reminded |
Mr. Smith gradually _____ a knowledge of the subject.
| A．attained | B．achieved | C．required | D．acquired |
His new appointment takes _____ from the beginning of next month.
| A．place | B．effect | C．post | D．office |
It was a great _____ for him to be pleasant to people he didn't like.
| A．attempt | B．trouble | C．power | D．effort |