Air pollution is a threat .......... the environment.

We received a call from the teacher ________ charge of our course.

Choose the best answer:

I received a lot of presents _____ my eighteenth birthday.

 Little he knows about the surprise that awaited him.

Choose the correct answer (A, B, C, D) to complete the sentence: "All her life she had a _______ trust in other people."

 There are 54 ………. minorities in Vietnam.

I wouldn’t ..................... of going to the party I hadn’t been invited to.

Mary is very_______ and caring. - I think she would make a good nurse.

He turned off the light ________ waste electricity.

Choose the sentence that has the same meaning as the original one by circling the corresponding letter A, B, C or D. 
 It was a holiday, but my brother went to school as usual.

 It has been claimed that ___________ in icy water, as is done in Russia and Finland, can help the body ___________ off illness.

Choose the best answer:

While he was painting the ceiling, he ............ down.

Choose the best answer:

My sister can _____ six languages fluently.

Find the mistake: I think it will be rain tonight.

Mark the letter to indicate the word whose underlined part needs correction.

My mother said that she would go to Britain following month.

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete the following exchanges.

 "What do you think of your new DVD player?" - "_______"

She weighed herself _______ know the pull of the earth exerting on her.

Choose the best answer among the A, B, C, or D provided to finish each of the incomplete sentences below:

Probability of extinction depends______________ both the population size and fine details of the population demography.

Identify the word or phrase A, B, C, or D that must be changed for the sentence to be correct:

If I knew her phone number, I'd have phoned her to come there last night.

Choose the best answer. "Music fan love _______ their playlist."

Neither William or his brother stole the rambutans from our orchard.