Reading book requires you to focus _____ what you are reading for long periods.

Lightning rods are used for to direct intense electrical bursts into the ground instead of into buildings and people.

Choose the best answer:

She ..................... smoking two months ago.

While his friends went ________ into the next class, John was kept ________.

Identify the error in each sentence: Exploration of the Solar System is continuing, and at the present rate of progress all the planets will have been contacted within the near 50 years.

Mary found it hard to concentrate on her work because the noise.

Identify the error in each sentence: In summer, warm southern air carries moist north to the eastern and central United States

After a while, the track we have been following became small undergrowth.

Choose the best answer:

What about .............. a new cooker?

The direct sources of fresh water in lakes are rain, melted snowy and ice

This popular TV game show_________ by about 10 million people every Saturday evening.

Many roads and railroads were built in the 1880s because of the industrial cities needed a network to link them with sources of supply.

They turned ________ my suggestion, which made me upset.

My sister attends an university in the Midwest which specializes in science.

Nuclear powers productive in the us is controlling by the Nuclear Regulatory Commission [NRC].

The 6-year-old boy resembles to his mother somewhat more than his older brother does.

He knows to repair the carburetor without taking the whole car apart.

Many birds will, in the normal course of their migrations, flying more than three thousand miles to reach their winter homes.

It is becoming extremely difficult to grow enough to feed the world’s rapidly increased population.

The vast majority of the world’s manganese is found in either South Africa but also the countries of the former Russian.

Our civilization is so commonplace to us that rarely we stop to think about its complexity.