Find the mistake in each sentence and correct it. 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? 7. Lan is tired because she has worked on her project for the whole day now. 8. My parents are not at home. They travelled since last September. 9. They have just been finishing filming a TV series called Jungle. 10. What did they enjoy since their return to their home country?