The biologist found some pollutants, a little of which can be considered very harmful to fish and other living organisms in the river.

The girl who were injured in the accident is now in hospital

I wouldn’t have to take this course if my English ____ better. 

The weightlifter who allegedly took performance-enhancing drugs have been named today.

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

Nobody knows the truth, _    ?

In spite of her physician handicaps, Helen Keller graduated from Radcliffe with honors

I did not realize that I had left my umbrella on the bus when it started to rain.

Before the Industrial Revolution come to America, the vast majority of the population had lived in rural areas

Without any hesitation, he did a decision not to take the course

Choose the correct answer to complete the sentence. "In the polluted environment, infectious diseases can be passed easily _____ one person to another"

The more important theorem of all in plane geometry is the Pythagorean Theorem

You have to use a magnifying glass so that to see some of the minute details.

Before television became so popular, Americans used to entertain each other in the evening by playing games, saying stories, and singing songs.

It is believed that the more frequent you exercise, the greater physical endurance you will have

Every scientist knows that gravity is the force that maintains the earth and the planets in its orbits around the Sun

John and Mary went to........... school yesterday and then studied in ........... library before returning home. 

John announced that he could not longer tolerate the conditions of the contract under which he was working.

As a young man, Darwin showed little promising as a biologist.

Prevented the soil from erosion, the trees are planted by the farmer many years before were which stopped the flood from reaching his house.

Although they reflect a strong social conscience, Arthur Miller’s stage works are typical more concerned with individuals than with systems.