Know where is the prob but dont know the what is the prob...

Hi,

Each of the following sentence has some words in blue containing mistakes. Please let me know the reason of the mistake and the correct form as well.

1 "He is the same man whom I met last weak."

2 "Let us partake the tournament and enjoy ourselves."

3."He keeps on repeating that hi is very desirous to succeed in his venture."

4."What a sweet music! exclaimed the audience."

5."Dev is , out of the question, the best footballer inour team."

6."I do not konw why your attitude is predudicial against the interest of the firm."

7."I do not doubt whether the announcement about the new appointment will be made today."

8."I belive we shall be profited from the experience of out predicessors."

9."I do not think that your attempt is better than that of hers."

10."By this document it appears that the deceased was alive in November last year."

11."They have gonme for a pilgrimage and will ocme back in twenty days."

12."The Bird Association advocated that all the caged birds should be put at liberty."

13." There is not doubt that everyone but he was rewarded for his labour."

14."In crisis I called your advice to my mind."

15."If you don't have a pen, mend this pencil and start writing."

Thanking you

Yours truly, Himadri Roy