Change the voice "Set the thief to catch the thief".

  • A. Let the thief to catch the thief
  • B. Let the thief be set to catch the thief
  • C. Thief is set to catch the thief
  • D. None of These

Explanation

In an imperative passive construction, “let” is followed by the object and “be” plus the past participle: “Let the thief be set to catch the thief.” The other versions either omit the passive auxiliary or are grammatically incomplete.

Related questions