问题补充：
Come and see me whenever .
A. you are convenient
B. you will be convenient
C. it is convenient to you
D. it will be convenient to you
答案：
A. you are convenient
B. you will be convenient
(答案→)C. it is convenient to you
D. it will be convenient to you
解析：考查convenient的用法，convenient的主语不能是人，而是it，另外whenever引导的是时间状语从句，不能用一般将来时，选C，句意是：方便时来看看我。
