You are missed

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Across
  1. 2. Plural for sky
  2. 5. At what time or at the time at which
  3. 7. Pleasing the senses
  4. 8. Fail to hit (something aimed at)
  5. 9. The first letter of the alphabets + 18th letter + 5th letter gives the word "..."
  6. 10. A polite or old-fashioned way of referring to or talking to a woman
  7. 11. Used before nouns to refer to particular things
  8. 12. To leave or depart
Down
  1. 1. Used as the subject of a verb to refer to a group including the speaker and at least one other person
  2. 2. Your first name
  3. 3. Easy to perceive; transparent, unclouded
  4. 4. Used to refer to any person in general
  5. 5. Used to talk about what is going to happen in the future
  6. 6. The activity of going for long walks in the countryside
  7. 8. Of or belonging to me