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

Trang An Scenic Landscape Complex, ___________as a World Heritage Site, is famous for its cultural value, natural beauty, ____________ value, and preservation of heritage.

Mosquitoes are such fast breeders that it is almost impossible to control them either by draining areas where they breed or to spary them with pesticides

A computer networks usually includes either selected employees of a particular business or or people who do not work together but have similar interests.

The ...... friendly products are designed not to harm the natural environment.

It is the large city in Europe with a population of over eight million.

Though he did not develop sign language, Laurent Clerc brought it on America from France

James often goes swimming in the summer, _    ?

I’m so tired; I’m finding it difficult in keeping my mind on my work.

A huge tree crashed through the bedoom roof and broke my bed and most of the other furniture. __________ in the room, I would have been killed. 

Before the formation of labor unions, individual workers had almost not voice in determining their wages, hours, or working conditions.

Gwendolyn Brooks, which won a Pulitzer Prize for Poetry in 1950, had 75 poems published by the time she was twenty.

Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines

There is a rumour that the army is about taking power, though this has been denied by government sources.

.......... chair which you are sitting in is broken. 

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

Choose the correct answer to complete the sentence. " Carbon dioxide is one ---- the primary greenhouse gases that cause global warming."

With cable broadband, you can go from one web page to another much quickly than you can. With a dial-up modem or DSL, and you can load web pages more readily.

Choose the correct answer to complete the sentence. "Having seen people suffer global warming consequences, people decided________ carbon footprints."

I miss my old motorbike, I wish I ____ it. I had it for years. 

If it is kept dry, a seed can still sprout up to forty years after their formation

The world would look eerie different if human eyes were sensitive to infrared radiation.