QUESTION: Fix punctuation: The closest airport for Veliko Turnovo is
ANS: The closest airport for Veliko Turnovo is:

QUESTION: Fix punctuation: New Nubia Z11 mini S screen protector deliberately smaller than the display as this is arched Fr295
ANS: New Nubia Z11 mini S screen protector (deliberately smaller than the display, as this is arched) Fr.2.95

QUESTION: Fix punctuation: LZ files are Compressed Files primarily associated with lzip Compressed File Antonio Diaz Diaz
ANS: LZ files are Compressed Files primarily associated with lzip Compressed File (Antonio Diaz Diaz).

QUESTION: Fix punctuation: He was thus reduced to cultivating his intellectual interests and often took part in public life under a transparent pseudonym
ANS:
He was thus reduced to cultivating his intellectual interests, and often took part in public life under a transparent pseudonym.