Putting a candle in the window a traditional practice in many cultures has a variety of

问题补充：

Putting a candle in the window a traditional practice in many cultures, has a variety of meanings in the United States．

A. was; that

B. is; it

C. has been; which

D. had been; which

答案：

A. was; that

B. is; it

(答案→)C. has been; which

D. had been; which

解析：考查时态及定语从句。根据从句中的动词has，可推断出上句的动作一直持续到现在。第二空用which，指前半句的含义。句意：在窗户上放一只蜡烛是许多文化的一个传统惯例，这在美国有各种各样的意思。所以选C。