American Thanksgiving Day falls on November 28 this year is becoming increasingly popul

问题补充：

American Thanksgiving Day, falls on November 28 this year, is becoming increasingly popular in China.

A. that

B. when

C. which

D. what

答案：

A. that

B. when

C. which

D. what

解析：句意：今年在11月28号的美国的感恩节，在中国越来越受欢迎了。这里是定语从句，先行词是American Thanksgiving Day,定语从句中缺少主语，用关系代词引导，因为是非限制性定语从句，不能用that，所以选C。