exercise的三种用法（当动词、不可数名词、及名词时的用法,并举例说明 英语
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【答案】 1 What goes on inside your brain when you exercise?
当你锻炼时你的大脑内部酝酿着什么?
2 Good health depends upon good food,exercise,and getting enough sleep.
健康依赖于良好的食物、运动和充足的睡眠.
3 He always does some exercises in the morning.他经常早上作练习