If , please pay a visit to me and have a further discussion of the issue.
A. you are convenient
B. it is convenient
C. it at your convenience
D. it is convenience
网友回答
A. you are convenient
(答案→)B. it is convenient
C. it at your convenience
D. it is convenience
解析：句意：如果方便的话，请来看望我，我们对这个问题进行一次更深地探讨。at your convenience在你方便的时候，选项C没有谓语动词；convenience 是名词；convenient不能用人做主语，一般需用it做主语，it is+形容词convenient；故选B。