Who is Liam?

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Across
  1. 1. What you might say when you make a little mistake.(+ '!')
  2. 4. The name of the young lioness minus 'L' plus 'HL'. (Name of my dog)
  3. 6. Hobbie where you shoot with plastic balls (BB's)
  4. 7. The science of designing and building things like bridges, machines, or circuits
  5. 9. Always looking after people with love and attention
  6. 10. Age.
  7. 11. Someone who is caring toward others
Down
  1. 2. Willing to share feelings and accept others warmly
  2. 3. The person this crossword is all about
  3. 5. Playing video or board games for fun.
  4. 7. What powers lights, phones, and just about everything today
  5. 8. to risk something of value with a chance of getting something of more/less value