--What about the protection? ---Let’s keep the surface ____ dirty by putting a cover over it.
.It isn't quite _____ that he will be present at the meeting.
. Many new _____ will be opened up in the future for those with a university education.
The members of the club wouldn't run a _____ in entrusting(委托) the organization to an unreliable person.
The meeting was _____ when the chairman fell ill.
John says that his present job does not provide him with enough _____ for his organizing ability.