Though many scientific breakthroughs have resulted from mishaps it has taken brilliant thinkers to recognize their potential.

It was very difficult to understand what he was saying about the noise of the traffic.

I sometimes give my friends a ride in my car.

He has sold his house and has no job and so now he has next to nothing.

I cannot understand why she did that, it really doesn’t add up.

She is always diplomatic when she deals with angry students.

The most important thing is to keep yourself occupied.

Ralph Nader was the most prominent leader of the U. S consumer protection movement.

Around 150 B. C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

Students are expected to always adhere to school regulations.

Carpets from countries such as Persia and Afghanistan often fetch high prices in the United States.

He didn’t bat an eyelid when he realized he failed the exam again.

The notice should be put in the most conspicuous place so that all the students can be well-informed.

Sometimes when I hear the news, I feel very miserable.

Because Jack defaulted on his loan, the bank took him to court.

His career in the illicit drug trade ended with the police raid this morning.