她负责每月处理公司的客户账单。

She is responsible for handling all customer ___billing each month.

这家咨询公司上个月的账单总额达到了50万美元。

The consulting firm's ___billings last month totaled $500,000.

比林斯先生是我们学校的校长。

Mr. ___Billings is the principal of our school.