A: May I go out to play football, Dad?
B: No, you ________. You must finish your homework first.
| A．may not | B．needn’t | C．shouldn’t | D．mustn’t |
A: May I go out to play football, Dad?
B: No, you ________. You must finish your homework first.
| A．may not | B．needn’t | C．shouldn’t | D．mustn’t |
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