问题补充：
She has a gift for creating an atmosphere for her students allows them to communicate freely with each other.
A. which
B. where
C. what
D. who
答案：
(答案→)A. which
B. where
C. what
D. who
解析：考查定语从句的连接词, 此处which 作从名句的主语, 指代前面的整一个部分“She has a gift for creating an atmosphere for her students”
