Gold, silver, and copper coins are often alloyed whit harder metals to make them hard as enough to withstand wear.

Don't leave here, _    ?

The shore patrol has found the body of a man who they believe to be the missing marine biologist

The threat of being dismissed do not worry me any more because I have started my own business.

The number of teaching assistants required meeting undergraduate course needs is rapidly increasing.

The function of pain is to warn the individual of danger, so he can take action to avoid more serious damage

Muscles are essentially made up by elastic fibers that lend flexibility to the body

After the police had tried unsuccessfully to determine to who the car belonged, they towed it into the station.

You aren't doing your homework,  _    ?

Many heavy work that was once done by hand can now be done more easily with the help of compressed air.

The Vermont Elememary Science Project, according to its founders, are designed to challenge some of the most widely held beliefs about teaching 

Nomadic hunter and gatherer societies have access to only a limited amount of food in an area and moved on when they have exhausted each locality.

Carrie Chapman Call organized the League of Women Votes after successfully campaign for the constitutional amendment that gave women the right to vote.

Would you show me ................... shortest way to …………. airport 

Superior to all others woods for shipbuilding, teak is also used for furniture , flooring, and general construction.

In the United States, about 75 percent of the total tomatoes crop is processed into juice, caned tomatoes, sauces, pastes, and ketchup.

Choose the best option:

She is a famous ___. She tries her best to protect rare animals from extinction.

People in this region cultivate mainly rice and vegetables.

The prices of homes are as high in urban areas that most young people cannot afford to buy them 

According to classical musical tradition, the term “sonata” is given to those works are written for solo piano or for solo wind or stringed instrument.

In the whole I agree with what you’re saving, but I’m not sure about your last point.