第二部分:单项选择(共10小题;每小题1分,满分10分)
请认真阅读下面各题,从题中所给的A、 B、 C、 D 四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
21. ---- ________
---- Thank you. I certainly will.
A. I wish you succeed. B. What can I do for you?
C. I greatly appreciate our friendship. D. Remember me to your family.