刚下过雨后，人行道上的瓷砖变得最滑。

After the rain, the tiles on the sidewalk became the ___slipperiest.

这个推销员是我见过最难对付的，他总是回避问题。

This salesman is the ___slipperiest person I've met—he always dodges the questions.

雨后这条小路是最滑的，走路要格外小心。

After the rain, this path is the ___slipperiest, so walk with extra caution.