Here i need corrections some sentences.

Please anyone who can correct these sentences?

1. Arrange the subject into two heads.
2. She has a great command over english.
3. There is no use of buying this book.
4. He got an employment in the bank.
5. He was elected the president of the country.
6. I have got headache.
7. I received a reply in affirmative.
8. It is unlikely that he wins the race.
9. He brought the articles to the market which he wanted to sell.
10. Who shall i thank for this fine gift?.
11. He was displeased with my going away.
12. I am one of those who cannot describe what i do not see.
13. There is a short interval between each act of the drama.
14. He does nothing but complains.
15. The general invaded the enemy.

Last Island, RAZ, Dr. Atif Rana and all other Senior and Junior Members please correct if you know.

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