Can I pay the bill by check?

我可以用支票付账吗？

You may be disconnected if you do not pay the bill.

若不付费就可能停止供应。

What if you [can't] pay the bill?

支付帐单之后会发生什么事？

You must pay the bill in cash.

你必须用现金付账。

Certainly, I will pay the bill.

那当然也是我去付账。