My mother _________ (do) volunteer work for three years. ...

[ Present Perfect and Simple Past Tense ]

My mother _________ (do) volunteer work for three years.

A. have did

B. have done

C. has done

D. did

Select your answer:

Random Topics:
Preposition Conditional Prepositions of Time Too or Enough Conditional Clause Pronouns Future Perfect Continuous Prepositions - Conjunctions Past and Present Tenses

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