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1. A. revision - B. pagoda (B. pagoda is the odd one out because it is a place, while A. revision is an academic term)
2. A. comment - B. entrance (B. entrance is the odd one out because it is a physical location, while A. comment is an expression)
3. A. teacher - B. professor (Both are educators, but A. teacher is more general; thus, there is no clear odd one out.)
4. A. revision - B. decision (A. revision is related to studying and learning, while B. decision is a process; thus, B is the odd one out.)
5. A. learn - B. teach (A. learn is an action done by a student, while B. teach is performed by an educator; thus, A is the odd one out.)
6. A. forest - B. effect (A. forest is a natural environment, while B. effect is an outcome)
7. A. form - B. found (A. form is a state or shape, while B. found is an action; thus, A is the odd one out.)
8. A. exchange - B. gather (Both involve action, but A. exchange involves two parties, making it slightly different.)
9. A. village - B. high school (A. village is a community, while B. high school is an educational institution; thus, A is the odd one out.)
10. A. pagoda - B. encourage (A. pagoda is a structure, while B. encourage is an action; thus, A is the odd one out.)