It was a good company. Was ?

A: Why did you leave the company?

B: It was a good company, but I just got bored of
accounts.
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B 用was 的原因如下:

因為 B 的回答的.......... but I just got bored of accounts.(過去完成式)
而B 為了說明 當時它是一間 好公司，所以是用 was 比較合適。

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Accounts,,,要加s 嗎?

Accounts----------會計學
而 account -------帳目
----------------------------

會計工作是指有關會計學的工作，
所以應該用 Accounts clerk (會計文員 )，
accounts manager (會計主管\ 經理)。
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Accounting manager ( 計帳目主管\ 經理)

上面朋友唔好揾咁普通嘅詞語講笑喇！
accounts clerk, accounts receivable全世界會計都用喎。