An accident occurred，but to our ______，no one was hurt.

If you don’t speak good English,you will be at a big      when you try to get a good job.

As a candidate（候选人）, you must try to make a good         on everyone if you want to win the election.

Parts of the cave have been badly affected by rain and           to the air.

I prefer to eat in that restaurant, because the ____ of service there has improved a lot.