3. 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
【解析】句意为：她具有给学生营造一种允许他们自由交流的氛围的天赋。本题考查定语从句。分析句子结构可知，定语从句“_____allows them to communicate freely with each other”修饰先行词atmosphere,将先行词代入从句后为：The atmosphere allows them to communicate freely with each other.由此可知先行词在定语从句中作主语，而且指代物，所以需用关系代词which，故正确答案为A项。
