The first sentence is in the active voice choose the most correct way of saying the same thing in the passive voice

1. They were interviewing her for the job She ... for the job
a) was being interviewed b) was interviewed c) has been interviewed

2. Tom is writing the letter.
The letter ... by Tom
a) is being written b) was written c) has been written

3. Everyone understands English.
English ... by everyone
a) is understood b) has been understood c) was understood