Choose the correct passive voice: "The engineers are testing the new machine."
- A. The new machine is being tested by the engineers. ✓
- B. The new machine was being tested by the engineers.
- C. The new machine has been tested by the engineers.
- D. The new machine is tested by the engineers.
Correct answer
A. The new machine is being tested by the engineers.
Explanation
Present continuous active becomes present continuous passive: 'is being tested'.