单项选择题

A．At six.
B．Before six.
C．After seven.
D．After six.
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填空题
The educational system is positive in promoting exercise and healthy foods, according to the passage.
单项选择题
A．He is aware that John is ill.B．He thinks that perhaps John is not in very good health.C．He doesn’t think John is ill.D．He doesn’t think John has a good knowledge of physics.
A．He is aware that John is ill.
B．He thinks that perhaps John is not in very good health.
C．He doesn’t think John is ill.
D．He doesn’t think John has a good knowledge of physics.
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