Mother's Day began in 1908 对这句话提问

Mother's Day began in 1908 对这句话提问
Mother's Day began in 1908 对这句话提问

Mother's Day began in 1908 对这句话提问
When did Mother's Day begin?
Which holiday began in 1908?

划线啊！
When did Mother's Day begin? (in 1908)
What began in 1908? (Mother's Day)