Please tell me the answer as tomorrow is my exam.

Dear student,

1. He left for his native valley yesterday.
2. no eroor
3. He told me that he had solved all the sums.
4. I informed you abput this earlier.
5. I have known you for many years.
6. no error
7. He has passed in English and has failed in Mathematics.
8. If you help me, I will give you a reward.
9. It has been raining heavily for a week.
10. The patient had died before the doctor arrived.
11. He will never meet me as soon as he returns.

egards