Помогите!Теперишный простий час!

1. She works in the hospital .2. He doesn't study at university .3. Victor does grammar exercises every day.4. My friend doesn't walk a lot. He works hard. Исправить ошибки. 1. I do not go to school on Sunday. 2. My brother doesn't study French.3. My mum doesn't like shopping. 4. They do not understand me.