咖啡终于开始起作用了，我感觉清醒多了。

The coffee finally ___kicked in, and I felt much more awake.

我们每个人都应该为这次聚会出点钱。

We should all ___kick in some money for the party.

咖啡半小时后开始起效，我终于感到清醒了。

The coffee took half an hour to ___kick in, but now I finally feel awake.