The 1908 Siberian meteorite explosion brought about considerable depletion of the northern hemisphere's ozone layer.

Many political radicals advocated that women should not be discriminated on the basic of their sex.

The famous racehorse Secretariat had to be destroyed because of a painful, incurable hoof disease.

Scientists warn of the impending extinction of many species of plants and animals.

He was fired because of his misconduct at the office party.

In most countries, compulsory military service does not apply to women.

It was boiling yesterday. We have a very humid and dry summer this year.

Most of the school-leavers are sanguine about the idea of going to work and earning money.

Perhaps more than anything else, it was onerous taxes that led to 'the Peasants' Revolt in England in 1381.

It was inevitable that the smaller company should merge with the larger one.

Adverse reviews in the New York press may greatly change the prospects of a new Broadway production.

The teacher gave some suggestions on what could come out for the examination.

The aircraft carrier is indispensable in naval operations against sea or shore based enemies.

The real meaning of the poem was obscured by the pretentious language in which it was written.

The whole village was wiped out in the bombing raids.

He was asked to account for his presence at the scene of crime.