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Across
  1. 2. (3 words) they collect the sun's energy on the roof
  2. 4. Present simple tense meaning IT LOOKS LIKE, IT COULD BE
  3. 5. slang for piling up or getting more and more of something
Down
  1. 1. present continuous tense meaning VERY COLD
  2. 2. collecting information by asking people questions
  3. 3. present perfect tense meaning TO BUY