CROSSWORD RIDDLES II

123456
Across
  1. 2. What sort of tree you can carry at your hand?
  2. 3. what can't talk but will reply if you speak to it?
  3. 4. What starts and ends with "t", and is also filled with "t"?
  4. 6. What do you own but that other people use more?
Down
  1. 1. When you add two letters to a five-letter word, it makes it shorter. Tell the word.
  2. 2. I have a lot of keys, but none of them can open a door.
  3. 3. What needs to be broken in order to be used?
  4. 5. What always goes up and never goes down?