I'm afraid I won't be available. I __________ a friend off at 3 o'clock this afternoon.
| A．see | B．am seeing |
| C．will see | D．will be seeing |
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I'm afraid I won't be available. I __________ a friend off at 3 o'clock this afternoon.
| A．see | B．am seeing |
| C．will see | D．will be seeing |
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