One decibel, which is a  unit of relative loud , is the smallest amount of change detected by human ear

A ………. is an enormous system of stars in outer space.

From 1905 to 1920, American novelist Edith Wharton was at the height of writing career, publishing of her three most famous novels.

Floyd Bennett was a pilot for two of the Arctic expedition of the 1920’s and the first pilot to fly over North Pole.

It’s been brought to my attention that there has been a number of thefts from the office.

For they, the biggest success was winning golden prize

Because the diamond is the hardest naturally occurring substance, it is used in industry for to cut, grinding, and boring other hard materials

The bite of the Black Widow spider can be very inflammatory to the affected nerves hospitalization may be required.

When the sky is blue and the sun is shining, you may say to your friends "____________"

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

Julie’s mother abandoned her when she was a few of months old and she grew up in an orphanage.

He’s so brilliant and he can do anything - ……….

Until recently , women were forbiddenlaw owning property.

In the United States, leading butter-producing states which are Wisconsin, California, and Minnesota.

Don’t talk in class, ________?

Nocturnal creatures, raccoons forage primarily at night and spend their days rest in dens.

You have ever heard about Yuri Gagarin, ____?

A seismograph oscillation of the ground caused by seismic waves, vibrations that travel from its point of origin through the Earth or along surface

Nobody bothered with telling me that the school had decided to have a special holiday on Friday

Without alphabetical order, dictionaries would be impossibility to use

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions: The teacher found a great deal of mistakes in his students’ writing.