牙医注射引起的麻木感开始消退了。

The numbness from the dentist's injection is starting to ___wear ___off.

你对这个新项目最初的热情已经消退了吗？

Has your initial enthusiasm for the new project ___worn ___off yet?

止痛药的效果会在几个小时后逐渐消失。

The painkiller's effect will ___wear ___off in a few hours.