If you ____ Mary by chance, please give her my phone number. 

What did you eat for........... breakfast this morning. 

People are destroying the air by adding ...... to it.

All almost the electricity for industrial use comes from large generators driven by steam turbines.

Bacteria lived in the soil play a vital role in recycling the Carbon and Nitrogen needed by plants.

It has been reported that during any twenty-four hour period, a minimal of three hundred North American women start their own businesses.

Every scientist knows that gravity is the force that maintains the earth and the planets in its orbits around the Sun

When Cliff was sick with the flu, his mother made him to eat chicken soup and rest in bed

The bodies of cold-blooded animals have the same temperature their surroundings, but those of warm-blooded animals do not.

The most common form of treatment it is mass inoculation and chlorination of water sources

If the water level has raised a little higher, the dam would probably have broken

Students in the United States often support themselves by babysitting, working in restaurants, or they drive taxi cabs.

“ This is not a good essay,” said the lecturer. “I find your arguments convince”.

Please open ..................door. 

The Medal of Honor is the higher award for military bravery that can be given to any soldier of the United States

To those who favorite free trade, the revival of barter can suggest nothing less than a disaster.

Among the problems facing the national park's manager, the most serious ones are those of ...... and expansion.

There is evidence that the caribou originated into North America and crossed over all land bridge into Asia and evolved into the Old World’s reindeer.

You need to study really hardly is you don’t want to fail your exams

Because silk is the strongest of all natural fibers, ranking in strong with the synthetic fiber nylon, its delicate look and fell are deceptive.

Most of the damage property attributed to the San Francisco earthquake of 1906 resulted from the fire that followed .