She usually goes home（at about 5 0'clock).（用when对括号部分提问)
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The meeting wìll take（two hours).（用how long对括号部分提问)
They have enough money for this house.（改为一般疑问句)
My son wants to watch TV after dinner every day.（改为否定句)
一个四位二进制加法计数器,初始状态为0000经过2015个时钟脉冲后,此计数器的状态为（)
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