The capital of the United States, originally New York City, was moved to Philadelphia where stayed until 1800.

A smile can be observed, described, and reliably identify; it can also be elicited and manipulated under experimental conditions

In many areas of the world, people need clothing for protection the weather.

Nga speaks English very well, _    ?

In the early twentieth century, there was considerable interesting  among sociologists in the fact that in the United States the family was losing its traditional roles.

 I'm on night duty. When you go to ..............bed, I go to ............ work. 

When T.S. Eliot’s “The Wasteland” appeared in 1922, critics were divided as to how good it was written

It is the large city in Europe with a population of over eight million.

Jack had to skip breakfast otherwise, he will be late for class.

Do you think what people have smoked less and less?

If drivers obeyed the speed limit, fewer accidents occur.

The authorities are worried about the increase of drug abuse.

Last night there was .......... singing outside my house. 

Learners can feel very ...... if an exercise is too difficult.

Her application for a visa was turned down not only because it was incomplete and incorrectly filled out but also because it was written in pencil.

Had I known the carpenter was going to take three days to show up, I ___________ the materials and done the work myself. It would be finished by now. 

He scored so good a goal that a wild cheer raised from the stands.

The Gray Wolf, a species reintroduced into their native habitat in Yellowstone National Park, has begun to breed naturally there.

When scientists discovered how soap works, it became possible to do synthetic detergents out of Petroleum.

............. winter is usually cold, but .................. winter of this year is warm. 

According to classical musical tradition, the term “sonata” is given to those works are written for solo piano or for solo wind or stringed instrument.