QUESTION: Fix punctuation: Key to this are the UNs 8 Millennium Development Goals MDGs adopted in 2000 with a 2015 deadline
ANS: Key to this are the UN's 8 Millennium Development Goals (MDGs), adopted in 2000 with a 2015 deadline.

QUESTION: Fix punctuation: Agricultural tractors and forestry tractors wheeled new of an engine power 90 kW excl tractor units for articulated lorries
ANS: Agricultural tractors and forestry tractors, wheeled, new, of an engine power > 90 kW (excl. tractor units for articulated lorries)

QUESTION: Fix punctuation: Seat and backrest are multiple adjustable in incline for more exercises and high comfort
ANS: Seat and backrest are multiple adjustable in incline - for more exercises and high comfort.

QUESTION: Fix punctuation: Flow Tree Traversal Subprocess SB21 Moves one activity through the tree in the specified direction
ANS:
Flow Tree Traversal Subprocess [SB.2.1] Moves one activity through the tree in the specified direction.