Question: What is the correct change of voice for: \'They are building a new bridge.\'

Options:

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

Correct Answer: A new bridge is being built by them.

Solution:

The correct passive voice form is \'A new bridge is being built by them.\'