QUESTION: Fix punctuation: After basic training during the summer of 1917 he arrived at the Proving Ground on 4 January 1918 Veblen headed the Division of Experimental Ballistics which was the mathematical research facility at the Proving Ground
ANS: After basic training during the summer of 1917, he arrived at the Proving Ground on 4 January 1918. Veblen headed the Division of Experimental Ballistics which was the mathematical research facility at the Proving Ground.

QUESTION: Fix punctuation: The paths in the timegraph got more and more vertical up or down with increasing n but the resulting distribution of where the drunkard might be became increasingly regular
ANS: The paths in the time-graph got more and more vertical (up or down) with increasing n but the resulting distribution of where the drunkard might be became increasingly regular.

QUESTION: Fix punctuation: 8 The fruits of goji berries and disposal contributes to improve the growth of other factors of quality of life
ANS: 8. The fruits of goji berries and disposal contributes to improve the growth of other factors of quality of life.

QUESTION: Fix punctuation: 4 Mount small pieces of wood on craspedia branches with yellow flowers
ANS:
4. Mount small pieces of wood on craspedia (branches with yellow flowers).