Past tense

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Across
  1. 4. the name of a period of vacation
  2. 6. past form of the verb "go"´
  3. 7. past form of the verb "is" for plural subjects
  4. 10. past form of the verb "is" for singular subjects
  5. 11. the name of the most important monument in New York city
Down
  1. 1. past form of the verb "cook"
  2. 2. an important island in New York
  3. 3. past form of the verb "play"
  4. 5. a detailed plan or route of a journey
  5. 8. past form of the verb "visit"
  6. 9. past form of the verb "swim"
  7. 12. past form of the verb "run"