Which sentence contains an inappropriate shift in person? The orchestra members all tuned their instruments before the concert.
If you think you are going to be late, you should call the office in advance. When one goes to the library, they should make sure to bring their library card. Each student has to submit his or her writing journal at the end of the week.
It is appropriate to break the rule that requires subjects joined by and to use a plural verb when either and neither are subjects. They always take singular verb.
For example : Either of us is capable of doing the job
