问题
选择题
Friends are those_____ make you smile, always open their hearts to you and encourage you to succeed.
A．which
B．what
C．who
D．whom
答案
答案：C
考查定语从句。句意“朋友是让你笑，总是为你敞开胸怀，并鼓励你直到成功的人。”those“这些”，在此指人，定语从句用who或that引导。Whom作宾语。故选C。