he came in second place.

four

yes they're fine.

I would remove the word "to" before and after the word "go". I would sound less wordy like this though: She was free go where and do what she liked. or She was free go where she liked and do what she liked.

a mentalist is someone who claims to be able to read minds through mental powers. Which makes them a con artist. A psychologist is a scientist or doctor who deals with the science of the mind and it's mental and emotional states and can help people with mental issues.

sputtering is something car does when it's not running very well. so a sputtering economy is an economy that isn't growing at a good pace or is slow to grow at a good pace.

it means she could knee someone quickly. to knee someone means to hit them with your knee. in that case knee is used as a verb rather than a noun.

the hokey pokey is an old song describing a dance and this is a description of the dance written as if it was written in the time of Shakespeare. a dumb attempt at humor i guess. Not even native english speakers speak like that anymore so even we have difficulty trying to understand what they're saying.