题目内容：

Please tell me you want your coffee black or white?
A what
B when
C whether
D how
试题的参考答案是what
Please tell me ,( )you want your coffee black or white?

优质解答

tell me后边是一个完整的主谓结构,因此不选what,而根据意思和后边地“or”则可以推断是由whether引起的宾语从句.