Find the five mistakes and correct them. Smartphones 1. were common these days. More and more people 2. is using smartphones. According to a survey, 49% of children 3. are smartphone users. Many children say that smartphones 4. are important in their lives. However, smartphones 5. are always good to have. Children spend too much time playing games on their phones. It 6. is a serious problem. It 7. is different in the past. Years ago, children 8. was happy to play physical games outside. The games 9. were exciting for them. Their favorite games 10. were hide - and - seek and tag. They learned social skills while playing those games.