Choose the best option:

Certain chemicals have been banned because of their damaging effect on the environment.

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• We must be very careful with sensitive issues such like this, to avoid giving offence

• The government raises money to operate  by tax cigarettes, liquor, gasoline, tires, and telephone calls.

• Every society changes, but not change at the same rate or in the same direction .

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• If his grades had been better, he would accept as a graduate student on the MBA program.

• Unlike wood, paper, and fabric which tendency to disintegrate after being buried for many years, ceramics and glassware although easily broken, survive well in the ground.

• Water , ice, and snow play a role in affecting an Earth’s rotation

• Because helicopters are capable of hovering in midair, they are particularly useful for rescue missions, military operates, and transportation.

• Choose the correct answer to complete the sentence. "The final product of the process of drying liquids that uses the first method will _____ small flakes"

• Nitrogen must be combine with another element such as Hydrogen or Oxygen to be useful in agriculture or industry.

• Jobs which are highly paid in some countries are badly paid in other.

• One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

  If drivers obeyed the speed limit, fewer accidents occur. 

• From 1905 to 1920, American novelist Edith Wharton was at the height of her writing career, publishing of her three most famous novels.

• If everyone _________, how would we control air traffic? Surely, we'd all be crashing into each other. 

• Upon reaching the destination, a number of personnel is expected to change their reservations and proceed to Hawaii.

• What caused the explosion in the factory it is still unknown

• Choose the correct answer to complete the sentence. "Land erosion is mainly caused by widespread _______"

• The office …………on the weekend.

• Rice is most important plant in Viet Nam

• Early balloonists remained aloft in the air for relatively short periods .

• Choose the correct answer to complete the sentence. "Twenty per cent of all the birds in the world ______ in the rainforest"