We appreciate your order, ( ) we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments.
A. and
B.but
C.. or
D. nor
出自:国家开放大学英语语法

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块