题目内容
Researchers have shown that ___________ can elevate mood, improve creativity and enhance sleep in many but not all people.
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The last few fire engines were ___________ to the fire, which had burned at least 10 floors of the biggest building in the city.
Next time you have a problem, think about how you can improve the situation instead of ___________ on all the negative aspects.
Years after the deadly car accident had occurred, he was still ___________ by images of death and destruction around him.
The mother tried to comfort her little boy who was ___________ about going to school for the first time.
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