Choose the correct answer to complete each following sentence by circling A, B, C or D. 

Glowood Appliances promises customers their money back ____________ they are not satisfied with their purchase.

Although Patricia is a doctor herself it doesn't_______ to special treatment and she will have to join the waiting list like everyone else.

Choose the best answer:
Sorry, I can’t come to your party. I am snowed under with work at the moment.

Why didn’t you tell me? – If you _________ me, I _________ you. 

The smell of chalk _____ the day of school.

Did he tell you __________?

I .............. the book about artificial intelligence by tomorrow, then you can borrow it.

Identify the error in each sentence: 

The number of homeless people in Nepal have increased sharply due to that severe earthquake.

In 1919, Sir Reginald Fleming Johnston was __________ as a tutor to Puyi, who was the last emperor of China. 

Choose the best answer among A, B, C or D that best completes each sentence:  “Where did you get these old dresses?” “We….. them in the old truck.”

Identify the error in each sentence: 

The diameter of the Sun is more than one hundred times greater than the Earth

Unless we _____ the problem, many animals could become extinct.

I am late because my alarm clock didn’t _______ this morning.

Sarah will be very annoyed if Dave ...........  her this evening.

Although thunder and lightning are produced at the same time, light waves travel faster ............... , so we see the lightening before we hear the thunder.

I would have visited you if I ............... busy with my homework.

They have a good …. of stamps. 

He suddenly saw Sue  ...........  the room. He pushed his way  ................  the crowd of people to get to her.

Identify the one underlined word or phrase that must be changed in order for the sentence to be correct.

You paid 30 euro for that jacket? That was a real ........

Water …. is increasing this summer

At the …. to the village, we saw the accident.