The manager thought ______ the problem for three days before he finally made the decision.
Tom wants to be a lawyer because he feels it is a very（ ）occupation, and he was always wanted to hold a high position in society.
I’d（ ）his reputation with other farmers and business people in the community, and then make a decision about whether or not to approve a loan.
Courageous people think quickly and act without hesitation.
Mr. Smith had an unusual（ ）: he was first an office clerk, then a sailor, and ended up as a school teacher.
To（ ）a room is to keep it supplied with fresh air.