Max got lost and was trapped in the forest for 10 hours _______ a farmer nearby

Max got lost and was trapped in the forest for 10 hours _______ a farmer nearby found him.

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已知全集为 U, 集合 A, B 为 U的子集, 若(∁ U A) ∩ B=∅, 则 A∩ B=()

已知全集为 U, 集合 A, B 为 U的子集, 若(∁ U A) ∩ B=∅, 则 A∩ B=()

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Work hard, _________ you will get good grades.

Work hard, _________ you will get good grades.

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I waited ______ they finished talking.

I waited ______ they finished talking.

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—Who wrote this novel?—Oh, it ________ by Lu Xun.

—Who wrote this novel?—Oh, it ________ by Lu Xun.

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