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
登录 或 注册 后可以参加讨论
前半部分说的是employment costs的动作,所以要比的是did
前半部分说的是employment costs的动作,所以要比的是did
登录 或 注册 后可以参加讨论