stage-ready 100-watt combo amp with a custom 12-inch speaker

How would the previous sentence be correctly capitalized?
Answer: Stage-ready 100-watt combo amp with a custom 12-inch speaker
cooperation in the value chain to improve the competitive parameters for the final product/service results in better competitiveness.

How would the previous sentence be correctly capitalized?
Answer: Cooperation in the value chain to improve the competitive parameters for the final product/service results in better competitiveness.
this returns the parried balls to the table tennis ball machine.

How would the previous sentence be correctly capitalized?
Answer: This returns the parried balls to the table tennis ball machine.
it is true that it may be difficult for ordinary man to distinguish between false desires and true or natural ones.

How would the previous sentence be correctly capitalized?
Answer: It is true that it may be difficult for ordinary man to distinguish between false desires and true or natural ones.