I don’t know what to + (verb)
Use when you tell someone that you are not sure about something.
Some examples:
- “I don’t know what to cook for dinner. There are no vegetables at home”
- “I don’t know what to say. I am not sure why she is behaving like this”
- “I don’t know what to do buy for her. She is your friend, right? Can you please tell me what I can buy? “
- “I do not know what to order. I don’t know much about chiese cuisine”