• B2 Tenses Revision
     Help
  • Marc and Craig (have done / have been doing) volunteer work for over two decades now.
    have been doing
  • They came up with the idea to start Me to We while they (built / were building) a school in Ecuador.
    were building
  • In 2021, the Me to We organization (helped / was helping) to plant 195,000 trees.
    helped
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