---- Mummy, can I go out for a play f
or a while?
---- Yes, if you _______. But make sure you come back before 8:00.
| A．shall | B．will | C．must | D．could |
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---- Mummy, can I go out for a play for a while?
---- Yes, if you _______. But make sure you come back before 8:00.
| A．shall | B．will | C．must | D．could |
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