我能延期到这周末还吗？
clear /kl??(r)/ v. 还清（债务）
extension /?k?sten?n/ n. 延期；延长；缓期
deadline /?dedla?n/ n. 最终期限
■ 另外，“还清债务”还可以表示为：pay off a debt 或settle a debt。
不欠债 keep/get out of debt
A：I really want to keep out of debt.
我真想不再欠债。
B：It's much easier to get into debt than to get out of debt.
欠债容易还债难啊。
◆ keep out of… 不介入……
收债 collect debts
A：At eighteen, he began to help his father to collect debts.
他十八岁就开始帮父亲收债了。
B：He then learnt about all kinds of business step by step.
然后，他就逐步熟悉了各种买卖。