In a federal form of government like that of the United States, power is divided between the legislative, executive, and judicial branches.

Each of the beautiful cars in the shop was quickly sold to their owner.

The notion that students are not sufficiently involved in their education is one reason for the recently surge of support for undergraduate research.

There are much kinds of books in my school library,but readers cannot borrow them.

If I had studied carefully, I wouldn't made so many mistakes.

Because blood from different individuals may different in the type of antigen on the surface of the red cells and the type of antibody in the plasma, a dangerous reaction can occur between the donor and recipient in a blood transfusion.

Despite the long history of the rights of property ownership, there have been a great deal of disagreement over what such rights entail.

These snakes will not cause you any serious harm. They are harmful.

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

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

Practicing his speaking English everyday, his hope was to get a good job in a foreign company.

Neither of the men arresting as terrorists would reveal information about his group.

For thousands of years, man has created sweet-smelling substances from wood, herbs and flowers and using them for perfumes or medicine.

There is a severe famine in Somalia, and thousands of people are dying from hunger.

Regarding as one of the leading figures in the development of the short story, O Henry is the author of many well- known American novels.

When precipitation occurs, some of it evaporates, some runs off the surface it strikes, and some sinking into the ground.

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

By the turn of the century, most of the inventions that were to bring in all the comforts of modern living has already been thought of.

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

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

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