Dinosaurs became extinct millions of years ago because of the earth's climate changed drastically.

I was very busy lately since the project of designing the new collection started.

Tom said that he was trying to carry out some campaigns to protect environment and will encourage others to do so.

I’m not used to go to school late. I prefer punctuation.

I like the fresh air and green trees of the village which I spent my vacation last year.

The number of students attending universities to study economics have increased steadily in the last few years.

My mother doesn’t care how much does the washing machine cost because she is going to buy it anyway.

For the first time in the history of the country, the person who recommended by the president to replace a retired justice on the Supreme Court is a woman.

Unlike many writings of her time, she was not preoccupied with morality.

People in every part of the world readily and easily communicates by means of electronic mail.

Mary and her sister just bought two new winters coats at the clearance sale.

A novel is a story long enough to fill a complete book, in that the characters and events are usually imaginary.

He passed the exams with high scores, that made his parents happy.

The two children tried as hardly as they could to bring about a reconciliation between their parents.

The earth is the only planet with a large number of oxygen in its atmosphere.

It is recommended that people to take regular exercise.

The amount of women earning Master's Degrees has risen sharply in recent years.

The Red Cross organizes and leads relief assistance missions after natural disasters such as floods, tsunamis, earthquakes, and homelessness.

We had better to review this lesson carefully because we will have some questions on it.

The workers went on strikes because of they thought their wages were low.

Dogs that are trained to lead the blind must be loyalty, intelligent and calm.