◎ 题干
All communication has to be open, honest, and patient if a happy and healthy relationship _____.

A. will maintain
B. is maintaining
C. are maintained
D. is to be maintained
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“All communication has to be open, honest, and patient if a happy and healthy relationship _____.[ ]A. will maintain B. is maintaining C. are maintainedD. is…”主要考查了你对  【一般现在时的被动语态】【主谓一致】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。