Error Spotting - Tense & Preposition — Set 6

Both the students and the teachers was present at the assembly.

Not only the students but also the teacher have participated in the event.

Either the manager or the employees has to make the final decision today.

Both honesty and integrity is important qualities for a successful person.

Neither the principal nor the teachers was available for the meeting yesterday.

Either my brother or my sisters have taken my book without asking permission.

Not only the doctor but also the nurses has been working hard throughout the shift.

Both the director and the producer was satisfied with the final film result.

Either John or Mary have to complete the project by the end of this week.

Neither the students nor the teacher are willing to work on the weekend.