Change to passive voice: They are building a new hospital.

  • A. A new hospital is built by them
  • B. A new hospital was being built by them
  • C. A new hospital is being built by them
  • D. A new hospital has been built

Explanation

The present continuous active becomes is or are being plus the past participle in the passive. Dropping being would change the meaning to a general statement rather than an action in progress. The agent by them is often omitted in such sentences because it adds little.

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