The chemical _____________ from cars and factories make the air, water and soil dangerously dirty.

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• Because silk is the strongest of all natural fibers, ranking in strong with the synthetic fiber nylon, its look and fell are deceptive .

• Too much water makes plants turning brown on the edges of their leaves.

• Dwelling primarily in the ice Northern Polar seas,  whales are characteristically small, white, agile, and elusive

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• Floyd Bennett was a pilot for two of the Arctic expedition of the 1920’s and the first pilot to fly over North Pole.

• The machinery we sell is assembling in this country, but most of the parts come abroad 

• Foreign students who are doing a decision about which school to attend  may not know exactly where choice are located.

• Basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population.

• We have rented two videos and watched them with some friends last night.

• It was near end of prehistoric times thatfirst wheeled vehicles appeared.

• Find the word which has a different sound in the part underlined.

• Pham Tuan said everything quite strange although he ……….. when he was on the ground.

• Per capita income is an entire income dividing by the number of people in the nation

• I don’t feel as tired after a train journey so I do after car journey.

• My father doesn’t know speak English 

• Geologists find it useful to identification fossils inrock sample because certain assemblages of species are characteristic of specific geologic time periods.

• Superior to all others woods for shipbuilding, teak is also used for furniture, flooring, and general construction

• My city stops flow of water, creating a reservoir and raise the flow of water.

• Scientists contributed to the development of television, whether no one can be said to have invented it.

• Although Kate saw no link between two crimes, but she thought that there was only one murde

• The Maelstrom i swift and danger current in the Arctic Ocean.