题目内容
Some animals continue to _______ each other when not raising young.
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Recently I attended a math _________ where the instructor casually stated that teachers were no longer reluctant to permit calculators in the classroom.
Carol admits to being "too ______ or something" to demand repayment, but she has resolved to stop lending money to Ginny.
My coworkers have been worrying about health conditions and ________ about safety hazards in the workplace.
First, the object of our study _______ for definition.
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