你能解释你上周五缺席的原因吗？

Can you ___account ___for your absence last Friday?

他和卡罗琳吵了一架，这解释了他今天早上的坏心情。

He'd had an argument with Caroline, which ___accounts ___for his bad mood this morning.

她被要求解释丢失的钱的原因。

She was asked to ___account ___for the missing money.