While studying the chemistry  of human body, Dr. Rosalyn Yalow won a Nobel Prize for research she conducted on the role of hormones

The flight was ________ for over an hour because of the weather. 

Some of the land in that region is so wet nd hot and covered with jungle that few people live ther

Please send me information with regard of insurance policy available from your company.

There has been widespread (public opposition against the plan for new road

When the children realized that they were by themselves the dark, they became really frightening

They were all shock his failure in the competition

I would be happy to see him, but I didn’t have time because of  coming examinations.

If you “make”  a “five-days”  trip across the Atlantic Ocean, your ship “enters” a different time “zone” everyday

The Gray Wolf, a species reintroduced into their native habitat in Yellows National Park, has begun to breed natural there

Everybody congratulated the astronauts ____ their successful trip into space. 

In the 1920s, Tulsa had a higher number of millionaire than other U.S. city

It is necessary that the director will sign all the copies, not just thtop one .

They are going to have to leave soon, and so do  we.

Rattan, a close relative of bamboo, is often used to make tables, chai, and other furnitures

In some species of fish, such the three-spined stickleback, the malen, not the female, performs task of caring for young.

Each year, people around world spending billions of dollars buying merchandise on Internet

Find out error in each sentence: The oxygen content of Mars is not sufficient enough to support life, as far as I know. 

Some methods to prevent soil erosion are plowing parallel with the slopes of hills, to plant on unproductive land, and rotating crops.

The exam results are being ………………… on Thursday. 

Both Ann and her sister look like her mother.