the contented... oof. "contented" probably means "satisfied" in this context.
Answer: e. Make you a more compelling speaker.
b. Improve your delivery.
A. Words are used whose sound imitates the sound of the thing being named
The past tense of cost is usually “cost”.
Very rarely is the past tense “costed” used, it’s more common to just say cost.
I thin that the answer is Wei-Chen.
