Last night there was .......... singing outside my house. 

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

One of the most difficult questions in defining sleep is “What are the functions of sleep?”

The children can read the story, _    ?

It is estimated that at least a million meteors have hit the Earth’s land surface, which is only 25 percentage of the planet

Choose the correct answer to complete the sentence. "It's possible that by the end of the 21st century, the rainforest will have _______ disappeared"

At the awards banquet, the philanthropist was recognized for his generosity and careful in aiding the poor.

The firstly naval battle of the Revolutionary War was fought off the coast of Machias, Maine, in June 1775

Electric lamps came into widespread use during the early 1900’s and have replaced other type of fat gas, or oil lamps for almost every purpose.

Lan never goes out at night,  _    ?

In 1950 , it was naively predicted that eight or ten computer would be sufficient to handle all of the scientific and business needs in the United States.

The number of time he spends gardening is increasing every day.

Choose the correct answer to complete the sentence. "Most people admit that they _____ to global warming"

Two experiments were completed in like fashion, but the results of the experiments were not at all like.

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

The wooden fence surrounded the factory is beginning to fall down because of the rain.

Since infection can cause both fever as well as pain, it is a good idea to check a patient’s temperature.

Harry lastly appeared in the role of King Lear at the National Theatre

There is a rumour that the army is about taking power, though this has been denied by government sources.

The surface conditions on Mars are the more similar with the Earth’s than those of nay other planet in the solar system

One inventor that Thomas Edison can take credit for is the light bulb.