1. The world relies heavily on fossil fuels, yet other excellent sources of energy???? Hydroelectricity, for example, is a very attractive from of energy.1) offer a lot of disadvantages
2) cannot be replaced
3) have already been developed
4) are much less efficient
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2. 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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3. ?????most people like to sleep approximately eight hours a day, researchers believe we can survive comfortably on half that much.1) As we know that
2) In spite of the fact that
3) Whenever it looks like
4) Even so it seems to be
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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. 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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ต้องการเฉลยข้อสอบ โปรดเข้าระบบสมาชิก
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