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题库 / Prep2007E1-SC-24
Employment costs rose 2.8 percent in the 12 months that ended in September, slightly less than they did in the year that ended in the previous quarter.
less than they did
less than it did
less than they were
lower than
lower than they were
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The word "less" is actually an adverb that modifies the verb "rose" here: "employment costs rose... less than they did [in the past] 所以不用过多考虑名词单复数问题
lower只能做形容词,不能修饰动词rose
Higher and lower we use for physical entities
“did”对应“rose” 不能省略
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