QUESTION: Fix punctuation: I think that this has happened in all really great revolutions for really great revolutions grow out of the contradictions between the old between what is directed towards developing the old and the very abstract striving for the new which must be so new as not to contain the tiniest particle of the old
ANS: I think that this has happened in all really great revolutions, for really great revolutions grow out of the contradictions between the old, between what is directed towards developing the old, and the very abstract striving for the new, which must be so new as not to contain the tiniest particle of the old.

QUESTION: Fix punctuation:  COMB SET WALLET in an elegant and practical box contains 5 different combs 
ANS: • COMB SET WALLET in an elegant and practical box contains 5 different combs ;

QUESTION: Fix punctuation: But you also need a durable transmission and a robust chassis
ANS: But you also need a durable transmission and a robust chassis.

QUESTION: Fix punctuation: Just download and enjoy it right now
ANS:
Just download and enjoy it right now!"