Faced with the exams, we should work as hard as we can.       , we shouldn’t do it at the cost of our health.

A volcano in Indonesia erupted on November the 16th, 2013, and _____, hundreds of people were killed. 

— Your shoes don’t match your dress exactly.— Well, Bill told me not to buy them, but I bought them____.

What a terrible experience! _____ , you are safe, that's the main thing.

----I was riding along the street and all of a sudden, a car cut in and knocked me down.------You can never be _____careful in the street.