QUES: And the Lord set a mark upon Cain that whosoever found him should not kill him

correct the punctuation.

CORRECTED: And the Lord set a mark upon Cain, that whosoever found him should not kill him.


QUES: 50 m2 downstairs game room with small kitchen and bedroom and private garage 

correct the punctuation.

CORRECTED: 50 m2 downstairs game room with small kitchen and bedroom, and private garage .


QUES: The hydrogen sulphide is removed in an activated carbon filter

correct the punctuation.

CORRECTED:
The hydrogen sulphide is removed in an activated carbon filter.