Find the mistake in each sentence and correct it. The first one has been done for you

1. Your mother has ever been studying abroad before?
2. How long the orientation and training programs has lasted? 3. The training session is over and the trainees have been returning to their jobs to begin applying what they've learned.
4. My younger brother has been knowing Thomas Edison since he was a child.
5. My family and I went to the same holiday resort every year since 2011.
6. Have you been decided which country to go for a higher education?