He _ his work before my father arrived.

by

(A) was finished
(B) have finished
(C) had finished
(D) None of these

🧠 Explanation:

  • The sentence describes an action completed before another past event.
  • This structure typically requires the past perfect tense.
  • "Had finished" correctly expresses an earlier completed action.
  • The clause "before my father arrived" signals the need for this tense.