Drug abuse have become one of America’s the most serious social problem.

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• To his surprise , the engine started by the very first try

• I was such nervous that I did think I would pass the exam.

• Of all outdoor activities, Paul likes fishing best of all, but he doesn’t enjoy cleaning fishing rods afterwards.

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• Tom didn’t believe in us, and it took long time to convince him.

• Some trees such as the Banksias need so that the seeds would open and germinate

• A dancing is the oldest and liveliest of the arts.

• Those who have never been abroad is eager to see how different other cultures are

• Many of the (A) important products obtained from trees, one of most important is wood pulp, which is used paper-making

• In the future, we will certain lead a more healthier life.

• Why did all the customers at the Red Lion have to pay pay off their beer that week?

• Because of its ability to survive close to habitations, the Virginia deer has actually increased their range and numbers.

• Among the parameters that determine whether an environment is suitably for life as we know temperature, water availability, and oxygen content

• Many small islands in Indian Ocean are threatened by raising sea level.

• For many years, scientists studying the effects that the sun on human skin.

• Children’s games, which are amusements involve more than individual, appear to  be cultural universe.

• The Irish potato famine of 1845 and 1848 were some of the worst in that country’s history led to thousands of deaths and mass emigration.

• Nuclear energy, despite it early promise as a source of electrical power, is still insignificant in compared with older and saenergy sources

• "     you hand that book, please?" "Sure. Here it is."

• Find out error in each sentence: The oxygen content of Mars is not sufficient enough to support life, as far as I know. 

• The more  important theorem of all in plane geometry is the Pythagorean Theo