1.(?)Does she work hard at her studying?
(-)She doesn't work hard at her studying.
2.(?)Was our father an excellent student at school?
(-)Our father wasn't an excellent student at school.
3.(?)Had Oprah Winfrey in 1977 her first TV talk show?
(-)In 1977 Oprah Winfrey hadn't her first TV talk show.
4.(?)Will Mina go back to India?
(-)Mina won't go back to India.