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单选题 When the bell finally rang at noon, the children ________ their seats since eight o'clock
学科：默认课程
时间：2026-05-15 17:58:39
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题目1单选题
By the time the plane finally took off, the passengers ________ on the tarmac for almost three hoursA. have been sittingB. were sittingC. satD. had been sitting
题目2单选题
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题目3单选题
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题目4单选题
When the bell finally rang at noon, the children ________ their seats since eight o'clockA. were occupyingB. occupiedC. had been occupyingD. have been occupying
题目5单选题
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题目7单选题
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题目8单选题
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题目9单选题
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题目10单选题
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