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

Peter didn’t mean to be disrespectful to his teacher. He just couldn’t control his temper.

The blank space of the paper must be 1.5 inches at the top and 1 inch at the bottom and on the sides.

The twins look so much alike that no one can tell them apart.

With respect to maneuverability, few birds can equal the capabilities of the hummingbird, which hovers for long periods and even flies backward.

All classifications of human societies and cultures are arbitrary.

I’m becoming increasingly absent-minded. Last week, I locked myself out of my house twice.

The whole village was wiped out in the bombing raids.

The purpose of this survey is to determine students’ attitudes toward love and marriage.

Now I understand why you moved out of that house.

It is an occasion when strength and sports are tested, friendship and solidarity was built and deepened.

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

In the 1776 pamphlet "Common Sense," Thomas Paine defended the cause of the American Revolution.

I didn’t go to work this moring. I stayed at home because of the morning rain.

He insisted on listening to the entire story.

Nobody knows the origin of the Vietnamese long dress. There was no evidence about where and when it appeared.

Before the earthquake hit the area,many minor tremors were felt.

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

Childbearing is the women's most wonderful role.

The event, watched by millions of people all over the country, takes place annually.

In the early days of baseball, the game was played by young men of means and social position.