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We're going to try to keep ourselves _______ as we grow older.

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After the fire, we call the ________ to take the victims to the hospital.

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We’re sorry that we weren't _______ to telephone you and your friends yesterday afternoon.

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Mary jogs everyday ______ lose weight.

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I bought this new software _____ Chinese.

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He advised me to take an English course. I_________ take it early.

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I will take a first-aid _________ to learn how to help people in case of emergency.

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I really don’t know __________ to ease the pain.