突然一切都豁然开朗，我意识到我在哪里见过他。

Suddenly everything ___clicked and I realized where I'd met him.

现在一切都突然明白了。

Now it all ___clicked into place.

经过几个小时的困惑，解决方案终于在我脑海中豁然开朗。

After hours of confusion, the solution finally ___clicked in my mind.