'zh' sound

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Across
  1. 2. We do this when we need to see how long something is.
  2. 3. When you really enjoy doing something you get ___ from it.
  3. 5. You can watch programmes on this.
Down
  1. 1. Pirates like to find this on a deserted island.
  2. 4. The inverse of multiplication.
  3. 6. When you go to the opticians they check your ____.