The mother's health was judged on her height-to-weight ratio, her diet, amount of physical (active), smoking status and how much alcohol she drank.
空格处填的是activity, 我想问能不能填activities 呢?
网友的题目是个语法填空题,考查词形变化。
activity 既是可数名词,也是不可数名词。
本句前面有个修饰语:her amount of,在amount of 后面的名词都是不可数名词,所以本句要用单数activity。
如果前面的修饰语是many,则用复数activities。
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