question: was i crazy to get married at such a "young" age?...
Capitalize this past sentence correctly.
A: Was I crazy to get married at such a "young" age?...

question: one of the officers, in the large army, became very successful and won the admiration and attention of the french people.
Capitalize this past sentence correctly.
A: One of the officers, in the large army, Became very successful and won the admiration and attention of the French people.

question: ball bearings provide smooth swinging features, heavier handles give an additional training effect.
Capitalize this past sentence correctly.
A: Ball bearings provide smooth swinging features, heavier handles give an additional training effect.