આપેલ વાક્યો $Active/Passive$ (કર્તરી/કર્મણી) પ્રયોગમાં છે. આપેલ વિકલ્પોમાંથી $Passive/Active$ (કર્મણી/કર્તરી) પ્રયોગમાં ફેરવેલું વાક્ય પસંદ કરો: "The students must listen to their teachers."

• A
  The teachers must be listened by the students.
• B
  The teachers are required to be listened to by the students.
• C
  The teachers must be listened to by the students.
• D
  The teachers must listened to by the students.