问题
选择题
Was it through Mary__________ was working at a high school_________ you got to know Bob?
A．who; who
B．who; that
C．that; that
D．that; where
答案
答案：B
第一空考查定语从句，先行词Mary关系词who在从句中做主语；第二空考查强调句型it is +被强调部分 +that….。句意：就是通过工作在中学的玛丽你认识鲍勃的吗？