1¡¢My stay in America was a unique opportunity for me to explore the American culture and see the ___________ (diverse) of people’s life there.

2¡¢There are a few excellent island countries in the world that are __________ (definite) worth visiting.

3¡¢If ______________(fortune) enough, they may dig out the problem and get back to happy marriage again.

4¡¢When you break the law, don't expect to escape ____________ the punishment.

5¡¢With any accident£¬it’s never just one thing. It’s ___________ series of faults that together create an unfortunate outcome.

6¡¢Flooding in the district is a common                   £¬which                      frequently. (occur)