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英语选择填空题疑问You should do more_____,Don’t always sit at the des

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英语选择填空题疑问
You should do more_____,Don’t always sit at the desk busy with your_____
A.exercise,exercise B.exercises,exercises
C.exercise,exercises D.exercises,exercise
选C
exercise n.练习,作业,运动
exercise作为“运动”时,是不可数名词
例:If you don't get more exercise,you'll get fat.
作为“作业”时,是可数名词
例:school work exercises