--- _________ I open the door, Mary?
--- ___________.
| A．May, Yes, you may. | B．May, No, you don’t.. |
| C．Can, No, you needn’t. | D．Can, Yes, you can’t. |
--- _________ I open the door, Mary?
--- ___________.
| A．May, Yes, you may. | B．May, No, you don’t.. |
| C．Can, No, you needn’t. | D．Can, Yes, you can’t. |
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