When my lost briefcase was returned with my year-long research results intact, I felt tremendously relieved. It was as if a huge heavy weight ______________ from my shoulders. 

When I was a secretary, the boss often made me to stay in the office in the evenings.

A thunder usually follows lightning by five seconds for every mile between the flash and the observer.

Choose the best option:

The problems of pollution call for a prompt ___ from the government.

The Egyptians first discovered that drying fruit preserved it, made it sweeter and improvement its flavor.

There are many different ways of comparing the economy of one nation with those of another.

Light rays what enter the eye must be focused onto a point on the retina in order for a clear visual image to form.

My mother doesn’t care how much does the washing machine cost because she is going to buy it anyway

The bath overflowed and the water dropped through into the living room

Thanks to his obstinacy, he achieved what he wanted. If he were discouraged earlier by this failures, he would not have reached his aims.

The bite of the Black Widow spider can be very inflammatory to the affected nerves that hospitalization may be required.

We really enjoyed the children’s imaginative and excited play last Saturday.

Because the tachinid fly is a parasite of harmful insects, much species have been imported into the United States to combat insect pests.

The composer Verdi has written the opera Aida to celebrate the opening of the Suez Canal, but the opera was not performed until 1871 

The strength, size, and surefootedness of the Hama make its as excellentcy beast of burden in mountainous regions today as it was in the past

Above 80 percent of the laborers at the construction site are temporary workers.

Choose the correct answer to complete the sentence. "Some scientists were _____ of having falsified the effects of climate change"

A police spokesperson confessed that detectives were baffled by Mr. Day’s disappearance, but were hoping to come up with an explanation

Designers of athletic footwear finely tune each category of shoes to its particularly activity by studying human motion and physiology.

Light can travel from the Sun to the Earth in eight minute and twenty seconds.

Esperanto is an unique language because it was created by a man called Ludwig Zamenhoff.