Collecting old tramway tokens________their passion
a)was
b)were
c)has been
d)are

• has been.
  as collecting is a singular event. so we can eliminate were and are
  secondly, 'was' indicate the past tense and passion is something which never ended, hence it should be the last option that left.
  
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• has been.
  
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• ans=are because collecting is present continuos tense
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• are seems suitable
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• was
  correct answer
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• Was is the correct answer
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