By the time the police____________, the thieves ____________ the stolen money.

Let’s do something to protect the environment, _____ we?

With its strong claws and many protruding tooth, a gopher is excellent digger.

The diary it was kept secret until the end of the war in fear of reprisals by the army.

Today’s nuclear fission fuels are the remnants of which used to be a much more mixture of radioactive and fissionable materials two billion years ago and earlier.

Most of the magnesium used in the United States comes from the water.

President Wilson had hoped that World War I be last great war, but only two decades later, the Second World War was erupting.

Most bats roos crevices, caves, or buildingday and are active at night or twilight.

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions: Although its height, Mount Whitney, one of the north America’s highest mountains, is popular with hikers

Gunpowder, in some ways the most effective of all explosive materials, were mixture of potassium nitrate, charcoal, and sulfur.

Intelligence, education, and experience all helps to shape management style.

A flammable liquid it was used to ignite fire that burned part of the blighted Nairobi Shopping Centre.

Armstrong was the first person to set ________on the moon.

Her application for a visa was turned down not only because it was incomplete and incorrectly filled out but also it was written pencil

Not until ecent has interest in synthetic fuels been revived.

Vaslov Nijinsky achieved world recognition as both a dancer as well as choreographer.

River transportation in the United States consists primarily of barges pull  towboats.

Mary found it hard to concentrate on her work because noise

He has been hoped for a raise for the last four months, but his boss is reluctant to give him one 

The signing of peaceful treaty was an event of major importance.

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