他在楼梯上绊了一下，差点摔倒。

He tripped on the stairs and almost ___fell.

上个月我们的销售额下降了10%。

Our sales ___fell by 10% last month.

那个公司因为财务丑闻而声誉大跌。

The company's reputation ___fell sharply after the financial scandal.

今年的母亲节刚好是周末。

Mother's Day ___falls on a weekend this year.

经过激烈的战斗，这座要塞最终落入敌军手中。

After fierce fighting, the fortress ___fell to the enemy troops.