Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

The Bali Tiger was declared extinct in 1937 due to hunting and habitat loss.

When we went to the airport to see her off, we had a traffic jam.

The augmentation in the population has created a fuel shortage.

A multitude of people attended the fund-raising presentation in the mall.

The Asian Games have advanced in all aspects since the first Games was help in 1951.

All classifications of human societies and cultures are arbitrary.

Childbearing is the women's most wonderful role.

Ask Mum for permission to go out now. She looks like she’s in a good mood.

The sales of drugs is controlled by law in most of countries.

The bomb exploded in the garage; fortunately no one hurt.

GCSE are not compulsory, but they are the most common qualifications taken by students.

The situation seems to be changing minute by minute.

If people’s interference with the environment decreases, more species will survive and produce offspring.

The first few days at university can be very daunting, but with determination and positive attitude, freshmen will soon fit in with the new environment.

Reaching 35 and obviously aging, Jane has to make up her mind on her future very soon.

When being interviewed, you should concentrate on what the interviewer is saying or asking you.

The situation seems to be changing minute by minute.

When I mentioned the party, he was all ears.

S. Mayo Hospital in New Orleans was so named in recognition of Dr. Mayo’s outstanding humanitarianism.

During the recession, many small companies were eradicated.