I started writing this essay hours ago and it's still not right.

The Queen Elizabeth is the largest ship which has been built on the Clyde.

We need to preserve the________of wildlife because each species has an important role to play.

Recognized as a World Heritage Site in Vietnam, Ha Long Bay attracts thousands of visitors every year, who come to enjoy its magnificent natural (27) ____. 

How many classes each week would a student normally attend at least?

Life has become much easier for people ________near the world heritage sites because there are more and better paid jobs there.

There are many ways for us to reduce our ________in order to save our environment.