1. People who live near the sea usually ??. to swim.1) knew whether
2) have known when
3) can know why
4) know how
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2. ???., people today are living much longer than their ancestors.1) Despite modern medical science and technology
2) Having benefited from medical and nutritional advances
3) By living in a world full of industrial pollution
4) Because of working hard and having stressful lives
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3. It was only about 10,000 years ago that animals were first being domesticated and crops were being cultivated and harvested, ??.., humans had fed themselves through fishing, hunting birds and animals and gathering wild food.1) Before that time
2) Recently
3) Ever since then
4) Until today
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4. Once the virus enters the bloodstream, it is carried to the liver??..it penetrates a cell and begins to multiply.1) when
2) for
3) where
4) that
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5. This homework is optional, ?????.1) you must not do it
2) either you do it or you fail
3) you should do it now or later
4) you don´t have to do it
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ต้องการเฉลยข้อสอบ โปรดเข้าระบบสมาชิก
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