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If the Oxygen supply in the atmosphere was not replenished by plants , it will soon be exhausted.

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The Americans annually import more than $3 billion worthy of Italian clothe, jewelry, shoes.

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Unlike  competitive running race, the walkers must always keep some portion of their feet in contact with the ground.

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In about psychologists have devoted less research to learning than to any other topic.

It is said that he......learning English for nearly one year.

Laura showed up for the meeting ____________I asked heer not to be there.

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............. is a group of countries or parties with similar political interests.

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Usually the climate mountainous area become much windy at higher altitudes

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Colleges in the newly formed United States, in recovering from the adverse effects about American Revolution, inaugurated a broad curriculum in response of social demands.

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If the airplane ticket wasn’t expensive, I could fly in Singapore for my holidays.

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I do not mind at all. You _______ apologize.

We suggest that she ____ the 10.30 train immediately.

In PE classes we have to climb ____________ a rope in 20 seconds. 

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Until recently, women were forbidden by law owning property.

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Prevented the soil from erosion, trees which are planted by the farmer many years before were which stopped the flood from reaching his house

This is the first time I _________such a famous person.

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The sum of all chemical reactions in organism’s living cells are called its metabolism.

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A number of  Pacific Islands are volcanoes that have pushed up from the ocean floor, others are the tops sunken mountain ranges

Choose the correct answer. "Phuong reviewed the lessons carefully;______ she could finish the test very well."

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It took the mayor more than an hour explanation to other members of the board the reaon he had missed the last meeting.

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The wooden fence surrounded his factory is beginning to fall down because of the rain.