题文
— I swim here?
—I’m sorry．Children under 12 swim alone here．
| A．Can；mustn’t | B．May；must |
| C．Must；can’t | D．Can’t；can |
— I swim here?
—I’m sorry．Children under 12 swim alone here．
| A．Can；mustn’t | B．May；must |
| C．Must；can’t | D．Can’t；can |
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