Neither his parents nor his teacher are satisfied with his result when he was at school.

If I could speak two languages last years, I would have got a good job.

Proteins are made up of folded irregularly chains, the links of which are amino acids.

The developing of the submarine was hindered by the lack of a power source that could propel an underwater vessel.

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

The Oxford English Dictionary is well known for including many different meanings of words and to give real examples.

Robots in the home might not be enough creative to do the cooking, plan the meal and so on.

The telephone rang several times and then stop before I could answer it.

Many languages used around the world they do not have a form of writing.

Oxygen plays a important role in maintaining live.

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

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

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

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

Despite America’s affluence, many people are without jobs, on welfare, and have a lot of debts.

In the end of the party, Mary found herself washing the dishes alone again, as usual.

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

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

Mai and Lan have a row because they have misunderstood one another.

Although most species of small birds gather in groups at feeders provided by bird-watchers, the bright red cardinals usually appears alone or with its mate.

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