The Browns held they called “family day” once each year.A. that 　B. what　C. which 　D. wh

问题补充：

The Browns held they called “family day” once each year.

A. that

B. what

C. which

D. when

答案：

A. that

(答案→)B. what

C. which

D. when

解析：本题考查名词性从句。句中what引导宾语从句，在从句中作call的宾语。句意：布朗一家每年一次举行他们称之为“家庭日”的聚会。