Ecologists are trying to preserve our environment for future generations by protecting the ozone layer, purifying the air, and have planted the trees that have been cut down.

Mrs. Loan, along with her talented students, are going to be on the summer camp to USA.

In very early times, people around the fire were entertained by storytellers with stories of heroes’ wonderful actions and victory.

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

We have been making prepare for our final exammination for two months.

She only had a twenty-dollars bill with her when she landed at Healthrow airport.

Ralph wishes that he went to the bank this morning before he went to work.

English, together with Literature and Maths, are compulsory subjects in the national curriculum.

The mother asked her son if he would have the floor clean the day before.

Building thousands of years ago, the ancient palace is popular with modern tourists.

The Great Pyramid of Giza is said to have built over a 20-year period.

My pen has very few ink in it, so could you give me some

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.

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

She did not know where most of the people in the conference was from.

There are many different ways of comparing the culture of one nation with those of another.

The bus was plenty of people who had spent many a happy hour shopping at the new.

The grass needs cutting, so let us have one of the men to take lawn-mower and do it.

Little have people done to alleviate the sea pollution caused by the factories in central Vietnam, haven’t they?

If I had enough money, I would have travelled around the world.

The puppy stood up slowly, wagged its tail, blinking its eyes, and barked.