由于连续三个月未能偿还贷款，他的账户已经处于违约状态。

His account went into ___default after failing to repay the loan for three consecutive months.

如果你不选择保存路径，程序会使用默认的文档文件夹。

If you don't select a save location, the program will use the ___default Documents folder.

由于对手缺席比赛，他因对方弃权直接晋级。

He advanced to the next round by ___default when his opponent failed to show up.