You’d better choose someone you think kind and friendly to help you.
A. whom; to be
B. who; is
C. that; is
D. which; to be
网友回答
A. whom; to be
(答案→)B. who; is
C. that; is
D. which; to be
解析：这题考查定语从句和主谓一致，先行词是someone，定语从句中you think是插入语，所以从句没有主语，用who引导定语从句，定语从句的谓语和先行词一致，就是someone，不定代词，用单数谓语。选B。