When mining for gold, you must first obtain the gold ore and then apart the gold from the ore.

Developing new technologies are time-consuming and expensive.

The freshman failed to follow the advice of her senior that he studied hard and not go out too much.

Reading several books on that subject, Bill considered himself an expert.

Do most boys and girls give a great deal of thought to their future employ?

The Greek historian Herodotus reported that one hundred thousand men are employed for twenty years to build the Great Pyramid at Gizeh.

Generally, Europe and Asia are regarded as being distinct continents, but they are simply vast geography divisions of the larger lad mass known as Eurasia.

An ambitious person is committed to improve his or her status at work.

The governor, with his wife and children, are at home watching the election results on TV.

Bill is often late for class, which makes his teachers angrily.

The children next door are a real nuisance. Their football is always coming on the fence and damaging the flowers in my garden.

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

It is believed that in the near future robots will be used to doing things such as cooking.

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

My teacher is very strict and he always makes us to finish all the exercises before leaving school.

David, who mother is Vietnamese, speaks both Vietnamese and English fluently.

When she heard the news, she got so a shock that she dropped her glass.

Those who had already purchased tickets were instructed to go to gate first immediately.

She wishes that we didn’t send her the candy yesterday because she’s on a diet.

Before went abroad, he had finished his English course at the English-speaking Center.

Henry David Thoreau was an American writer who is remembered for his faith in religious significance of the nature.