Choose the best option:

Human beings have ____ great influence on _____ world.

Drug abuse have become one of America’s the most serious social problems .

Petroleum is composed of a complex mix of Hydrogen and Carbon.

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

The Department of Foreign Languages are not located in the new building opposite the old one.

“Did you invest that company, Carol?” “Yes, but now I wish I ____”. 

Early balloonists remained aloft in the air for relatively short periods .

There is nothing to eat, _    ?

Australian koalas are furry, gray animal that live in trees and feed on leaves.

While searching for the wreckage of a unidentified aircraft, the Coast Guard encountered severe squalls at sea.

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

I only noticed we were running lowly on petrol after we had passed the last filling station.

There are only ...........few seats left for …………… tonight's musical at ...........university. 

What exactly is the influence of air pollution ...... human beings?

Scientists are still uncertain of what the universe originated millions of years ago

Most countries depend to few extent on cereal imports to augment their own crops.

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

Although there are new drugs on the market, deaths from malaria are being increasing in some parts of the world

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

If I had known that the road were flooded, I would never have taken that way. 

Many exercises such as calisthenics, running, or to swim involve producing muscle tension through a range of movements that are called isotonics.

Martin Luther King Jr.’s magnificent speaking ability enabling him to effectively express the demands for social justice for Black Americans.