1. --- I serve three meals every day and do almost everything for him, but he still lets me down.

--- I’m afraid that’s ______ you are mistaken.

A. how                 B. where             C. what                      D. in which

2. Can you explain ______ that the medicine has for my illness?

A. about the function to me               B. me about the function  

C. me the function                             D. to me the function