There are 10 mistakes in the passage. Find them and correct them
1. It is necessary that he is at school avery days except Sundays
2. If I were in your position, I will help the needy in my village.
3. Regular excersice has a good effect for our health
4. My elder sister has a birth to a son last month
5. He was absent from school yesterday because his serious illness
6. She regrets not to pay attention to her English study
7. Nam wishes he were interested in learning English in two years.