--- _______ I come back before 6 o’clock?
---No，you _______．But you _______ be back later than 7 o’clock．
| A．Need；must；must | B．May；mustn’t；can’t |
| C．Can；can’t：can’t | D．Must；needn’t；can’t |
--- _______ I come back before 6 o’clock?
---No，you _______．But you _______ be back later than 7 o’clock．
| A．Need；must；must | B．May；mustn’t；can’t |
| C．Can；can’t：can’t | D．Must；needn’t；can’t |
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