— Can I come to ask for some advice at any time?
—Yes, of course. ___________ .
| A．If you're convenient | B．At your convenience |
| C．Don't worry | D．Don't mention it |
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— Can I come to ask for some advice at any time?
—Yes, of course. ___________ .
| A．If you're convenient | B．At your convenience |
| C．Don't worry | D．Don't mention it |
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