---Can I help you, dear?
---Yeah, I don’t know a banana milk shake. Maybe you can teach me.
A. what to do
B. who to make
C. how to make
D. why to do
网友回答
A. what to do
B. who to make
(答案→)C. how to make
D. why to do
解析：本题考查宾语从句。疑问词+to do是固定短语，经常用来做句子成分。此句做的是宾语。句意：——亲爱的，我可以帮助你吗？——嗯，我不知道怎么摇香蕉牛奶，也许你能教我。