Identify the mistake in each sentence below.

Gilbert Newton Lewis, a (A) chemist, helped to develop (B) the modem electron theory of valence, a theory explains (C) the forces holding atoms together (D) in molecules.

Choose the best answer:

A new school _____ in the city at present.

Transfer taxes are imposed on the sell or exchange of stocks and bonds.

In spite modern medical technology, many diseases caused by viruses are still not curable

Choose the best answer: 
The levels of carbon dioxide in the atmosphere have risen ...............the burning of fossil fuels.

Choose the correct option A, B, C, or D to complete the sentences.

We usually _____ ourselves by playing hide and seek or flying kites.

Choose the underlined part among A, B, C or D that needs correcting:

Friends advised her to stop doing the housework because her old age.

Bells told people of happy vents, such as weddings and born or, sometimes had to announce unpleasant events such as a death.

Our style of hair maybe _______ date at present. 

P.T. Barnum opened his own circus in 1871 and become the most famous showman of his time.

Choose the correct answer to fill in the blank: 

There isn’t a_______ of truth in his words. What a liar!

Since rats are destructive and may carry diseases, therefore many cities try to exterminate them

After Allan had searched for twenty minutes, he realized that his jacket had been laying on the table the entire time.

It is common ____________ by car among Europe countries.

Identify the mistake in each sentence: 

Ponds are noted (A) for their rich and varied types of (B) plant and animal life, all maintain (C) in a delicate ecological balance (D).

Choose the correct option A, B, C, or D to complete each sentence.

It’s a truth that dogs can hear and see _____ better than humans.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

Not every student is aware of _____________ of the English language.

Choose the word or phrase (a, b, c or d) that best fits the blank space in each sentence.

I can’t understand why you________ the chance of working abroad for a year. It would have been a great experience for you.

Choose the best answer

Teaching English is a great example of a volunteer job that often ________a career.

Choose the best answer:

Children will need _____ education

Choose the best answer:
................do earthquakes usually last? - Less than one minute.