Помогите с английски пожалуйста!!Write a question for each situation. Use Present

Помогите с английски пожалуйста!!
Write a question for each situation. Use Present Perfect Continuous.
1. John looks sunburnt. You ask: (you/sit in the sun?).
2. You have just arrived to meet a friend who is waiting for you. You ask: (you/wait/long?).
3. You meet a friend in the street. His face and hands are very dirty. You ask: (what/you/do?).