checking substrings in Array and replacing them in ruby : I'm studying code and part of the course asks me to write a program that filters out words in the array test_tweets that match words in banned_phrases array, but can't figure out what method achieves this. This is what I've got so far:  

`test_tweets = [
  "This politician sucks!",
  "I hate this Government!",
  "I can't believe we're living with such a bad politician. We were so foolish",
  "Politicianname is a danger to society. I hate that he's so bad – it sucks."
  ]

banned_phrases = ["sucks", "bad", "hate", "foolish", "danger to society"]`