Add punctuation: based on 165 responses to our customer survey
A: based on 165 responses to our customer survey..

Add punctuation: And then brothers began to enjoy themselves tippling from morning to eve and their time went by like the flow of a river
A: And then brothers began to enjoy themselves, tippling from morning to eve, and their time went by like the flow of a river.

Add punctuation: They admit that is impossible for man to accomplish
A:
They admit that is impossible for man to accomplish.