We don’t permit _______in the classroom; that is to say, students aren’t permitted ________in the classroom.
| A．to smoke; to smoke | B．smoking; smoking |
| C．smoking; to smoke | D．to smoke; smoking |
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We don’t permit _______in the classroom; that is to say, students aren’t permitted ________in the classroom.
| A．to smoke; to smoke | B．smoking; smoking |
| C．smoking; to smoke | D．to smoke; smoking |
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