QUESTION: Fix punctuation: Looking which airport for Gleneagles
ANS: Looking which airport for Gleneagles?

QUESTION: Fix punctuation: All important factors that can create lifelasting changes in the way we live
ANS: All important factors that can create life-lasting changes in the way we live.

QUESTION: Fix punctuation: Our goal is satisfied customers
ANS: "Our goal is satisfied customers."

QUESTION: Fix punctuation: Some who claim they have built on Christ as their rock may not be building properly
ANS:
Some who claim they have built on Christ as their rock may not be building properly.