Spelling Spoilers #5

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Across
  1. 3. Where you would see how much gas is in the car
  2. 4. Short for lab
  3. 6. Punctuation and...
  4. 8. You need this to drive a car
  5. 10. I am ... that you will get everything right
  6. 11. How tall are you? What is your ...?
  7. 12. By myself, I get so ...
  8. 13. Going against your moral standards
  9. 16. The act of looking after yourself
  10. 17. Do it by yourself
  11. 18. Do it right now
Down
  1. 1. Where you would go to eat food
  2. 2. Valentine's Day is in...
  3. 5. A popular mobile game amongst teenagers, '... Us'
  4. 7. A union of two people
  5. 8. This feeling occurs when you miss someone
  6. 9. The period of time as a teenager
  7. 14. It is ... that you will get all of these correct
  8. 15. Something that measures volume