Find mistakes and correct

While the sun is major source of ultraviolet rays, it is not the source only.

Electric wire carry current for lighting and outlet designing for household appliances.

Indiscriminately dumping of waste material and inadequate sewage treatment are two serious causes environmental pollution.

Find the mistakes and correct

Hoover Dam in Nevada is multi purpose structure that provides flood control, hydroelectric powerful, and drinking and irrigation water 

 Mr. Thomson with his wife and his three children … abroad

It is writing English that causes difficulties to foreigners.

All the students are looking forward spending their free time relaxing in sun this summer.

I hadn’t understood his directions. However , I asked him repeat what he’d said 

Choose the best option:

That resort is popular ____ young people, especially on Tet holiday.

When the Panic of 1857, some us citizens who had been rich or comfortable became poor while few others, capitalizing economic shifts, became richer.

Many scientists contributed to development of television, whether one can be said to have invented it.

The number teaching assistants required meeting undergraduate course need is rapidly increasing

How much times did Rick and Jennifer have to do experiment before they obtained the results they had been expecting ?

Before the formation of labor unions, individual workers had almost not voice determining their wages, hours, or working conditions

Mr Ross, our oldold history teacher ruled his classes by rod of iron!

Each chemical (element is characterized to the number of protons that an atom of that element contains, called its atomic number.

Although Kate saw no link between the two crimes, but she thought that there was one murder.

Economists have tried to discourage the use of phrase “underdeveloped nation” and encouraging the more accurate phrase “developing nation” in order to suggest ongoing process.

The three largest state is, and has been since Alaska’s admission into Union, California.

Unexploded bombs buried deep in the ground have been found in the coteuc site opposite of the City Hall.

It’s time for you went home, but I’d rather you stay here.