Students Are Amazed By Infrared Examples In Real Life Science Labs
Any of the X, Y is used if there's a possibility that a group different than X would Y. Did any of the teachers go home or was it just the students (both teachers and students possibly could have gone home) It'd be unusual for a group other than students to need to take exams, so you don't really need the of the.
#ibelong | SK Life Science Labs
