火车晚点了，我们比计划晚到了。

The train was late, so we arrived ___behind schedule.

我们队在联赛积分榜上落后了。

Our team is ___behind in the league standings.

在销售额方面，我们目前落后于我们的主要竞争对手。

In terms of sales, we are currently ___behind our main competitor.