According to Tom, William lost his job not because he was always sick and usually went to work late, but because he made a big error in last month's accounting and the boss was angry with him.

据汤姆说，威廉丢了工作不是因为他经常生病和上班经常迟到，而是因为他在上个月的账目中犯了一个大错误，老板对他很生气。