Choose the best answer:

Peter has been working for 10 hours. He _______ be very tired now.

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions:

Solar energy is not only plentiful but also infinite.

There are many               of pollution in our modern world

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions:

We are very grateful to Professor Humble for his generosity in donating this wonderful painting to the museum.

Choose the correct answer to each of the following questions. "True Blood is my favourite TV series, ____ we don't have much time to watch it often."

I don't think office work is suitable for me. I'd like to work in a more challenging environment.

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The computer has dramatically affected ______ photographic lenses are constructed.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. 
Despite the wealth of information campaigns telling people about global warming and its causes, most people have (23) _______to realize how severe the problem is. Coming climate changes could alter as much as one third of plant and animal habitats by the end of the 22nd century. These changes could in (24) ____ cause widespread extinctions among plant and animal species around the globe. 
Coastal and island habitats are perhaps in the greatest danger (25) _______ they face the combined threats of warming oceans and rising sea levels. As habitats change, many animals will come under intense pressure to find more suitable homes for themselves. Mass (26) ____ of at least some animals are certainly to be expected, but the fact remains that many animals will simply not be able to move fast enough. 
Such dire predictions may sound alarmist, but they are based on the rather moderate estimate that the amount of carbon dioxide in the atmosphere will double by 2100. Many scientists believe, however, that this figure is actually very conservative, and they claim that a tripling is far more realistic. If they are (27) ____, the effects on nature will be even more dramatic

These changes could in (24) ____ cause widespread extinctions among plant and animal species around the globe

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One of the first exercises in math class is ______ measure the radius of a circle.

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The factory is working below _________ because of the shortage of essential materials.

This river used to have the greatest__________ of freshwater fish in the country, but now very few species are found here.

 Choose the best answer among A, B, c or D that best completes sentence: The panda’s …. habitat is the bamboo forest.

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You don’t like tea, ..............?

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If you like .............. beauty, I will take you there.

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

Participants from 100 countries go to the Olympic Games

The old manager has just retired, so Tom takes ________his position.

The more satisfied employees are, ______________ to the company.

Choose the correct answer to complete the sentence. "We might stop here unless you change your way of _____."

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions:

In remote communities, it's important to replenish stocks before the winter sets in.

Indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

At the moment it is difficult to assess the extent of the damage that his company has caused to the environment.

I have looked through the report, but I must admit, only ........................