Do you like riddles?

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Across
  1. 2. What has many eyes but can't see?
  2. 5. What kind of room has no windows?
  3. 7. What starts with a T, ends with a T, and has T in it?
  4. 8. What can travel around the world while staying in a corner?
  5. 9. My first is in chocolate but not in ham, my second’s in cake and also in jam, my third at tea-time is easily found, my whole is a friend who’s often around. What am I?
  6. 10. What are the next three letters in this sequence? OTTFFSS (hint: also kind of doctor)
  7. 14. What begins with an “e” and only contains one letter?
  8. 15. What has ten letters and starts with gas?
Down
  1. 1. What English word has three consecutive double letters?
  2. 3. What has a head and a tail, but no body
  3. 4. What five-letter word stays the same when you take away the first, third, and last letter?
  4. 5. Paul's height is six feet, he's an assistant at a butcher's shop, and wears size 9 shoes. What does he weigh?
  5. 6. Where does Friday come before Thursday?
  6. 8. With pointed fangs I sit and wait, with piercing force I serve out fate. Grabbing bloodless victims, proclaiming my might; physically joining with a single bite. What am I?
  7. 11. What is 3/7 chicken, 2/3 cat and 2/4 goat?
  8. 12. What has many teeth but can't bite?
  9. 13. I have keys, but no locks and space, and no rooms. You can enter, but you can’t go outside. What am I?