QUESTION: Fix punctuation: Because you are obliged to insure and register the car in your country of residence you may encounter problems if your insurance is not valid in the country you want to move to
ANS: Because you are obliged to insure and register the car in your country of residence, you may encounter problems if your insurance is not valid in the country you want to move to.

QUESTION: Fix punctuation: Some DX file extension formats can be opened in binary format only
ANS: * Some $DX file extension formats can be opened in binary format only.

QUESTION: Fix punctuation: 20 David said to Solomon his son Be strong and courageous and do it Dont be afraid nor be dismayed for the LORD God even my God is with you He will not fail you nor forsake you until all the work for the service of the LORDs house is finished
ANS: 20 David said to Solomon his son, "Be strong and courageous, and do it. Don't be afraid, nor be dismayed; for the LORD God, even my God, is with you. He will not fail you, nor forsake you, until all the work for the service of the LORD's house is finished.

QUESTION: Fix punctuation: As they began to fly off we found a pair of binoculars to try and get a better look however by then they were too far away
ANS:
As they began to fly off we found a pair of binoculars to try and get a better look, however by then they were too far away.