People today live longer than____ in the past.

问题描述:

People today live longer than____ in the past.
that和 those选哪个呢?为什么?

由于有介词短语in the past,than后的内容不可用it,them之类 只可用those或that,根据指代物单复数判断形式 people为复数,所以用those指代