Whats the definition of sarcasm?

Someone answer my questions i need them asap

Write a conversation in chinese between two people. have the first person greet the second person, and tell their name. then, have the second person greets the first and tell their name. after that, have each person ask the other what time it is, what day of the week it is, and what month it is. have each person answer the other. in the end, have both people say goodbye to each other

Which of the following sentences from the text contains an example of metaphor he look like one of those ballerinas that dance just on the tips of your toes be mom was horrible snake-woman boys came out again and said if you ever ever see brian's hand was shaking and he was crying like a big baby but his fingers still stayed out the right when the fire was going to give him a good roasting joetta ran across the room and sounding like the little engine that thought it could she blew the match out before it got him