Which sentence CANNOT be changed into the passive?

  1. The baby drinks milk.
  2. The cook made a cake.
  3. She wrote a poem.
  4. The baby sleeps.
Answer

D) The baby sleeps.

An intransitive verb (no object) has no passive. Active & Passive Voice · Special cases

English MCQ · More English: Active & Passive Voice MCQs · Practise