Explanation:
Negatives
a. She wasn't dancing on the stage.
b. He will not bring a book.
c. They haven't sold a computer.
d. It hasn't been raining all day.
e. He didn't buy a computer.
Interrogatives
a. Was she dancing on the stage?
b. Will he bring a book?
c. Have they sold a computer?
d. Has it been raining all day?
e. Did he buy a computer?
Hope it will help :)❤