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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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Costs do not rise low/high (comparative forms are: lower/higher). The usage sounds awkward. Costs should rise little / much.
Please note that: lower is a comparative form of low. Lower is only be used with nouns that can be described as low. There is no clear rule for less/lower. Usually, you have to memorize the usage of less/lower for each situation. For example:
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