Once again I have had to move a thread of yours, Qurban. Please post questions about English in the 'Ask a Teacher' forum in future.
Also please note that we do not deal with a string of sentences headed by a blunt to demand to find the mistakes. We expect you to make some effort to find the problems if you want us to help you. In any case, this appears to be a homework assignment, and we don't help with those. Your teacher wants to know what you can do, not what we can do.