If you ________ Beijing Duck，I'd like to treat you to a meal at a famous duck restaurant．
| A．didn't try | B．don't try | C．haven't tried | D．hadn't tried |
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If you ________ Beijing Duck，I'd like to treat you to a meal at a famous duck restaurant．
| A．didn't try | B．don't try | C．haven't tried | D．hadn't tried |
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