keep up with ...跟上；catch up with ...赶上;be fed up with...厌腻； come up with...提出； put up with...忍受； fill up with ...挤满了；speed up with...； end up with...结束； meet up with...偶遇；split up with...与.分手（断交）； tie up with... 把…与…密切联系起来.等等.