“Have you guys covered exponents yet?”

You're tutoring a middle school student in math. You want to know whether the student's teacher has taught a topic. You ask:

Have you guys covered exponents yet?

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“Try to narrow down your choices through process of elimination.”

You're tutoring a child in math. You're giving him advice on how to answer multiple choice questions on a test. You say:

Try to narrow down your choices through process of elimination.

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