I've worked with children before, so I know what________ in my new job．

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从A、 B、 C、 D四个选项中，选出可以填入空白处的最佳选项.

Not until all the fish died in the river, ________ how serious the pollution was.

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A． did the villagers realize

B． the villagers realized

C． the villagers did realize

D． didn't the villagers realize

--I don't know whether I should go abroad or not, Daddy.

--I leave________ to your own judgment whether you should do it.

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--Do you drop in to see us next time you come to the city?

--__________.

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There is no point ________.

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In old stories, dragons were often________ a most powerful animal.

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Of all the students________ on the blackboard, Lily got the best grades in the exams.

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You can give the books to________ need them most.

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It was Captain Cook's quick________ that saved the boat and the expedition.

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I don't doubt ________ he will come back.

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