Words often confused

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Across
  1. 2. He fell over but had only a ... bruise on his arm.
  2. 4. Shakespeare wrote such ......... plays.
  3. 5. Who is a ......... pop star than Madonna?
  4. 6. We can say buildings, people and trees are ......
  5. 7. Name the ........ mountain in the world.
Down
  1. 1. The ...... area of the world is covered with sea water
  2. 2. Doris Lessing has written excellent........ stories.
  3. 3. I've very ......... reason to doubt that you're honest