system
apprehensive: My car broke down yesterday and it had to be dropped off at the mechanic.  I am really nervous about how much it will cost to fix it!
gpt
My car broke down yesterday and it had to he dropped off at the mechanic.  I an really nervous about how much it will cost to fix it!
gpt
Don't worry. Why do you think it will cost higher?
gpt
The engine was making a horrible sound!
gpt
Oh, hope it will be less cost. 
gpt
I do as well, but the mechanic has the advantage.