Because of the rise of sea level, some islands will disappear. _____ people of certain countries will have to look for new places to live.

 The students are ___ young people between the ages at between the age of sixteen and twenty.

(2013·湖北，29)Don't defend him any more.It's obvious that he________destroyed the fence of the garden even without apology.

It was very lucky to see the "Monster of Lake Tianchi", ______ we didn't see it clearly.

. --- Believe it or not, I passed the driving test at the first attempt yesterday.--- Great! But remember you can never be ___ careful when driving a car in the street.