Certain courses are compulsory; others are optional.

We know not what is good until we have lost it.

Mr. Smith’s new neighbors appear to be very friendly.

We ought to keep these proposals secret from the chairman for the time being.

School uniform is compulsory in most of VNese schools.

In some Asian coutries, it is customary for people to worship their ancestors.

With her sophiscated tastes, the singer has become an omnipresent icon of style and beauty.

I take my hat off to all those people who worked hard to get the contract.

The whole conference was totally disorganized - nobody knew what they were supposed to be doing.

The soliders will do anything to halt the enemies from entering.

Visitors, especially children, can go there to learn how to recognize the different species of animals and plants.

We are very grateful to Professor Humble for his generosity in donating this wonderful painting to the museum.

The distinction between schooling and education implied by this remark is important.

The next day the union voted to begin an indefinite strike.

When the bank refused to lend us any more money we realized we'd reached the end of the road.

Names of people in the book were changed to preserve anonymity.

The clubs meet on the last Thursday of every month in a dilapidated palace

Due to an increase in population and the use of nearby land for farming, there are toxic levels of chemicals in the water.

We offer a speedy and secure service of transferring money in less than 24 hours.

The World Cup is followed with great interest around the globe- the final game of the 1994 tournament was played to a television audience of more than 1 million viewers.

Adverse weather conditions made it difficult to play the game.