Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions.

A. conversation B. extinction C. international D. recognition

Choose the best answer:

You can pass the exam by ................ harder.

Identify the error in each sentence: 

We cannot clean up all the polluted seas and rivers, nor we can stop the disappearance of plants and animals.

Pictures of the surface of the planet Venus was received yesterday from the space probe “Explorer”, which was launched last year.

Some birds can travel at speeds approaching one hundred miles an hour, and a few land animals can so.

Disease is not as widespread than before because of better preventation medicine and vastly improved nutrition.

People who exercise usually are less likely to develop heart disease than is those who not do keep fit.

The abilities to work hard, follow directions, and thinking independently are some of the criteria for success in the workplace.

I would be happy to see him, but I didn’t have time because of the coming examinations.

Can you ________ what it would be like to live without books?

Most sand dunes are always in motion as wind pushes sand upward one side of each dune, over the top, and down the other  side

Before the invention of the printing press, books have been all printed by hand.

Education is desperately needed in many countries where a high percentage of the population are illiterate.

With an annual income of fifty thousand dollars a year, he can afford to give a luxurious life.

 They _______ been learning English for two years.

While they were away at the beach, they allowed their neighbors use their barbeque grill.

If we coming home in time, our step-mother will be angry.

He’ll be very upset if you _________his offer of help.

Disease is not as widespread than before because of better preventive vaccine and vastly improved nutrition.

The giant panda eats chiefly mainly bamboo shoots, though it also eats some other plants and occasionally feeds on fish and small rodents.

After searching for evidence in the house, the police concluded that the thief must have come in through the window and stole the property while the family was asleep.