Find and correct the mistakes.
1. The flight to Vientiance have departed.
2. She hasn't finish the letter.
3. I forget that girl's name already.
4. Fred;s brother just graduates from university.
5. I am trying to learn English for years.
6. I have been waiting for 2 hours, but she not come yet.
7. She reads all the works of Dickens. How many have you read?
8. I wait hare nearly half an hour for my girl-friend Joana; do you think she forgets to come?
9. Mary rests in the garden all day because she is ill.
10. Although John has been studying at the university for 5 years, he have not got his degree yet.