QUESTION: Fix punctuation: On all DB trains incl highspeed trains ICICE except DB Auto train special trains and only on certain City Night Line trains
ANS: On all DB trains (incl. high-speed trains IC/ICE) except DB Auto train, special trains and only on certain City Night Line trains.

QUESTION: Fix punctuation: In addition for a limited time you can buy 2 and get 1 free and you can enjoy Free Shipping to the US and the UK
ANS: In addition, for a limited time, you can buy 2 and get 1 free and you can enjoy Free Shipping to the US and the UK.

QUESTION: Fix punctuation: Registration 20 December 2006 2052
ANS: Registration 20 December 2006 20:52

QUESTION: Fix punctuation: After your registration we will send a voucher with access to an online exam together with the manual
ANS:
After your registration, we will send a voucher with access to an online exam together with the manual.