The girl left home after quarreling with her parents, _____ them quite worried.
John says that his present job does not provide him with enough _____ for his organizing ability.
The meeting was _____ when the chairman fell ill.
The members of the club wouldn't run a _____ in entrusting(委托) the organization to an unreliable person.
John was very upset because he was _____ by the police with breaking the law.
The child enjoyed _____ up the wooden bricks then knocking them down.