Which sentence is written in active voice?
the students had been held longer by the monitor in study hall.
some students are given trouble by the reading passages that are longest.
the teachers allow extra credit opportunities to all their students.
the progress reports are to be signed by the students' parents.

Which sentence is written in active voice?
The students had been held longer by the monitor in study hall.
Some students are given trouble by the reading passages that are longest.
The teachers allow extra credit opportunities to all their students.
The progress reports are to be signed by the students' parents.

The answer is C

I think it will be timid that will describe the tone of a letter