1) What
1: What is he reading?
2: What do they often play in the afternoon?
3: What does she usually have for breakfast?
4: What do you often wash in the morning 
5: What will Nam build?
6: What can they make for you?
7: What should you drink everyday?
8: What are they going to buy?
9: What will she buy?
10: What will you buy tomorrow