老人滑倒后摔在了地上。

The old man slipped and ___fell down onto the floor.

这个团队因为沟通不畅而失败了。

The team ___fell down because of poor communication.

由于新型智能手机的发布，旧款手机的价格突然大幅下跌。

The prices of older phone models ___fell sharply after the new smartphone was released.