Directions: In each of the questions below, four sentences are given that may or may not contain an error. Choose the one that is grammatically as well as contextually correct and meaningful. If all the sentences are correct, mark 'All are correct as your answer'.
1
Although it was raining, but we decided to go to the beach.
2
Neither the teacher nor the students are aware of the changes in the schedule.
3
Many people believes that exercising early in the morning is the best way to start the day.
4
The project, which was very important to the company, were completed on time.
5
All are correct.