Mum, _______ I do my homework tonight？
No, you _______. But you must finish it before Sunday．（ ）
| A． |
need； mustn't |
| B． |
must；needn't |
| C． |
must；mustn't |
Mum, _______ I do my homework tonight？
No, you _______. But you must finish it before Sunday．（ ）
| A． |
need； mustn't |
| B． |
must；needn't |
| C． |
must；mustn't |
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