题目内容
Motorcyclists should wear helmets to ______ them from injury.
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The spy gave General Washington a ______ report on enemy activities.
What makes basketball the most ______ of sports is how these styles do not necessarily clash.
It is hard to tell whether we are going to have a ______ in the economy or a recession.
The excursion will give you an even deeper ______ into our language and culture.
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