题目内容
Jesse Jackson looks back on the attacks of September 11 and ________ on the mistakes that were made in responding to them.
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But the priorities of many ________ are with extracurricular activities, playing sports, and partying and socializing.
_______, it's smart to exercise caution.
That's without cutting the length of students' vacations, increasing class sizes, or requiring _______ to teach more.
Only he could ______ this arduous task.
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