The reason she gave for not being present was the heavy snow prevented her coming.A. why;

问题补充：

The reason she gave for not being present was the heavy snow prevented her coming.

A. why; because

B. why; whether

C. that; that

D. how; that

答案：

A. why; because

B. why; whether

C. that; that

D. how; that

解析：本题考查定语从句和表语从句。第一空所填词引导定语从句修饰先行词reason，由于是作动词gave的宾语，所以可以省略；第二空是that引导的表语从句。