—________ I swim here?
—I’m sorry. Children _______ swim alone here.
| A．Must , can’t | B．May , must | C．Can, mustn’t | D．Can’t can |
—________ I swim here?
—I’m sorry. Children _______ swim alone here.
| A．Must , can’t | B．May , must | C．Can, mustn’t | D．Can’t can |
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