—You should have thanked the hostess before leaving.
—I meant ________.But I couldn't find her when I was leaving.
| A．to do | B．to | C．doing | D．doing so |
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—You should have thanked the hostess before leaving.
—I meant ________.But I couldn't find her when I was leaving.
| A．to do | B．to | C．doing | D．doing so |
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