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direction ________(动词)

词形变换

advantage ________(反义词)

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My English teacher has been to the United States ________ and she will go there a third time next year. (two)

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I would never forget the ________ trip to Beijing at this time of last year. (please)

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Several ________ ago, the population of China was very small. But now it's larger than before. (century)

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There have been many great ________ that have changed the way we live. (invent)

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Families in cities are able to give their children better ________, but they can have only one child. I think that's unfair to them. (educational)

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All the doctors think that it's very ________ for us to take enough exercise in the morning every day. (help)

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He had cooked some fish and had also helped ________ to some juice and he hoped that I would join him soon. (him)

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The ID card which I lost last week was ________ being used in a supermarket in the city of Shenzhen. I must go and have a look there. (find)