We are pleased to know that you have planned to come to the Autumn Guangzhou Fair.We wish to discuss with you some other important things if you could come（）your earliest convenience.<br>A:by<br>B:on<br>C:in<br>D:at

We are pleased to know that you have planned to come to the Autumn Guangzhou Fair.We wish to discuss with you some other important things if you could come（）your earliest convenience.
A:by
B:on
C:in
D:at

出自：外经贸英语

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