They are building a new bridge. (Passive)

  1. A new bridge is being built by them.
  2. A new bridge was being built by them.
  3. A new bridge has been built by them.
  4. A new bridge is built by them.
Answer

A) A new bridge is being built by them.

Present continuous → is/are being + V3. Active & Passive Voice · Voice in tenses

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