Easy
1 point
ID: #15333
Question
When - the telephone invented?
Options
1
has been
Correct Answer
2
had been
Correct Answer
3
was
Correct Answer
4
is
Correct Answer
Explanation
This is a passive voice question about a past event. The telephone 'was' invented in the past. Therefore, 'was' is the correct auxiliary verb. 'When was the telephone invented?'