Riddles

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Across
  1. 2. what has a lot of rings and 'rings' all the time but is not a bride or groom?
  2. 3. what starts with a T ends with T and is filled with tea?
  3. 5. what cup can't hold water?
  4. 6. what is lighter than a feather but the strongest man can't hold it?
Down
  1. 1. what invention lets you see through walls?
  2. 2. Mr.Pink lives in the Pink house,Mr.Blue lives in the blue house and Mr.Green lives in the green house. Who lives in the white house?
  3. 4. what belongs to you but is used more by others?