—What do you think of teaching,Bob?—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
He was ___ to give up halfway even though there might be more difficulties ahead.
My story had ___ publicity, so there were radio and television interviews.
We are determined to get the work ___ before New Year’s Day.
While you are out, you should keep your doors and windows ___.
___ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.