1.They won't go for picnic.
Will they go for picnic?
2.his mother never washes his clothes.
Does his mother always wash his clothes
3.he couldn't play the piano two years ago .
Could he play the piano two years ago
4.I didn't play soccer for two hours yesterday.
Did you play soccer for two hours yesterday
5.The students don't take exercise every day.
Do the students take exercise every day?