Find and correct one mistake in each of the following sentences: Nam didn't go to work last week because of his sick

Find and correct one mistake in each of the following sentences
1. Nam didn't go to work last week because of his sick
2. Long often spends about a hour watching TV every day
3. Sh! My younger sister sleeps in the next room, so please don't make noise
4. Our summer vacation starts in the end of May and it lasts for almost three months
5. Phusics are one of my favourite subjects at school
6. The weather today is worst than it was yesterday
7. Yen, a new student in class 7A, is from Hue and her parents still live here
8. His parents never participate in the festival and so does he