21st Century Unit 2 B1.10

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The speaker has a soft voice so we can __________ hear her.

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You should keep important __________, such as your passport, in a safe place.

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The photographs are not worth a lot of money, but they have great __________ importance.

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Experts __________ that the world's population will be 9.7 billion in 2050.

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There was a(n) __________ change in the price of oil in 2008. It fell from $145 to $30 in less than six months.

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He spends four hours every night on his homework. He is __________ his schoolwork very ___________ this semester.

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Any increase in the price of oil will have serious __________ for the whole country.

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I use only real sugar in my coffee. I don't like the __________ kind.

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The __________ temperature is 68 degrees F, but it will get warmer later today.

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The police provide __________ for everyone in the city.