bi-two twice

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Across
  1. 1. two weeks
  2. 3. a series of drama
  3. 4. a three legged stand
  4. 5. express in two different languages
  5. 7. a plane with two wings
  6. 8. a bike with three wheels
Down
  1. 1. eyeglasses
  2. 2. every two years
  3. 4. a shape
  4. 6. an athletic contest