—The meeting ___________ because of the smog in Northern China last week.
— Oh, it’s too bad! We should take action to improve the air quality.
| A．put out | B．was put out |
| C．put off | D．was put off |
—The meeting ___________ because of the smog in Northern China last week.
— Oh, it’s too bad! We should take action to improve the air quality.
| A．put out | B．was put out |
| C．put off | D．was put off |
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