Who solved that problem?

English / Tenses — Multiple-choice practice

  1. A. By whom is that problem solved?
  2. B. By whom can that problem be solved?
  3. C. By whom will that problem be solved?
  4. D. By whom was that problem solved?

Correct answer

By whom was that problem solved?

Explanation

Explanation Active Voice: W ho Passive Voice : By whom This is a sentence of Past Indefinite Tense. Was and Were are the helping verbs of Past Indefinite Tense. Active: Who solved that problem? Passive: By whom was that problem solved?

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