the math exercise was difficult____out

the math exercise was difficult____out
A.work B.to work C.workin
everything was about robots so I was not_____in that.
A.interest B.interesting C.interested
I didn't like that movie ______.
A.all B.at all C.at the all
sad movies always _____girls_____.
A,makes ,cries B.make ,cry C.let ,crying
I don't feel well .I don't want to eat_____.
a.nothing B.anything C.something