Maryhastwobrothers,
问题详情：
Mary has two brothers, _______ are doctors.
A. both of they B. both of whom C. both of them D. whom of both
【回答】
B
知识点：复合句
题型：选择题
问题详情：
Mary has two brothers, _______ are doctors.
A. both of they B. both of whom C. both of them D. whom of both
【回答】
B
知识点：复合句
题型：选择题
