由于过敏反应，她的嘴唇肿了起来。

Her lips ___swelled up due to an allergic reaction.

随着越来越多的观众加入，欢呼声逐渐增大。

The cheers ___swelled as more and more audience members joined in.

当他看到自己的作品展出时，心中充满了自豪。

His heart ___swelled with pride when he saw his artwork on display.

我的脚踝受伤后很快就肿了起来。

My ankle quickly ___swelled after the injury.

随着促销活动的开始，顾客数量迅速增加了。

The number of customers ___swelled quickly as the sale began.