I want to know, sir, is whether you have any goods in that bag I should know about.
A. What; that
B. What; what
C. That; what
D. That; where
网友回答
(答案→)A. What; that
B. What; what
C. That; what
D. That; where
解析：考察名词性从句和定语从句。第一空What引导主语从句what I want to know,且在句中作宾语。第二空的定语从句的关系代词that指代bag作为know about的宾语。