“everybody” is plural
I couldve never guessed Ms. Odim was left-handed.
I could’ve never guessed Ms. Odim was left-handed.
After hours and hours of homework, the bed looked enticing.
A motion was made by the students to rid of homework for good.
Neither of the students will do (his or her, their) homework.
Neither of the students will do his or her homework.
(Troy and Gabriela’s, Troy’s and Gabriela’s) duet was beautiful.
Troy and Gabriela’s duet was beautiful.
Dropped in the bushes, Ms. Odim found her wallet.
Ms. Odim found her wallet dropped in the bushes.
The students’ declamation performances amazed their teacher.
Every teacher, student, and administrator has to go to (his or her, their) sit down table.
Every teacher, student, and administrator has to go to his or her sit down table.
The dinner prepared by the chefs was delicious.
I nearly read all of Auntie Mame the first day we were given our books.
Time to play on cellphones during class should be insisted on by every student.
Neither Ms. Odim nor her students were on time for (his or her, their) class yesterday.
Neither Ms. Odim nor her students were on time for their class yesterday.
Ms. Odims two sisters dogs came over last week.
Ms. Odim’s two sisters’ dogs came over last week.
Ms. Odim asked the students to do 100 pages of reading for homework, which gave them a great deal of trouble.
The homework had been completed.
“Both” is plural
I have already completed the outlines for my projects.
The results of our term end grades will only be known after we take our exams.