You ________ in person; a telephone would have been enough.
| A．couldn't have come | B．needn't have come |
| C．shouldn't have come | D．mustn't have come |
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You ________ in person; a telephone would have been enough.
| A．couldn't have come | B．needn't have come |
| C．shouldn't have come | D．mustn't have come |
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