What stylistic device can you see here: What should we do about languages? We should learn them.

Does this sentence contain litotes: Stars aren't hard to find on a clear night sky

What stylistic device can you see here: I've lost my keys and my mind.

Does this sentence contain parallelism: After a good night's sleep I'll be as fresh as a daisy.

What stylistic device can you see here: ‘These shoes are killing me!’

Does this sentence contain metonymy: ‘Check out my new ride!’