Spot the error: "The teacher, along with her students, are going on a trip."
Q1. Spot the error: "The teacher, along with her students, are going on a trip."
Answer: are going
Explanation: When a noun is joined by a phrase like "along with," "together with," or "as well as," the verb still agrees with the original subject — "the teacher" — which is singular, so "is going" is required instead of "are going."