Have self confidence
How can i improve my ability to make scientific decision?
Why should you improve your ability to use the library?
your ability to express yourself
Passing this class may be beyond my ability. You will improve your ability with practice.
communication skills, writing ability, and reading comprehension.
Peoples ability to improve their status changed because it has allowed people to communicate acrosscontinents and buy things for them selves.
It has been said that it does.
I think it will improve learning ability
Your ability to cook that's what improves when you cook....
No
They don't win anything. They "win" the ability to choose the next Sole Survivor winner.
With a slight difference in meaning, use either "ability to read" or "ability in reading."