Teachers recommend parents_____their children under 12 to ride bicycles to school for safety.
| A．not allow | B．do not allow |
| C．mustn’t allow | D．couldn’t allow |
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Teachers recommend parents_____their children under 12 to ride bicycles to school for safety.
| A．not allow | B．do not allow |
| C．mustn’t allow | D．couldn’t allow |
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