Which of the following sentences has an error in agreement?
everyone should wear his or her seatbelt while flying.
flies is buzzing over the trash can.
two girls and a boy are here to deliver the papers.
did anne or her friend mary leave her wallet on the table?
if you're ever struggling with stuff like this, i find it easiest to try both the plural and singular form of the noun/verb, maybe say them out loud, and see what sounds right.
either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.
everyone should wear his or...