64.Believe it or not, but __________ (实际上) he did what he could to help you out of trouble. You should never just hate him.

63.__________(比较) with our small flat, Bill’s house is like a palace.

62.Our cars are __________ (相似) in color but different in type.

61. Scientists have made many important __________ (发现) in science, which enable people to lead a modern life.