A couple are talking ...
Wife: I am a little worried about going away for the weekend and leaving the children home alone.
Husband: Well, Johnny is fifteen and Katy is sixteen. I certainly think they are old enough to be left alone for a weekend. They are equal to the task of being unsupervised for a weekend.
Wife: I suppose you are right. They have been making some very mature and wise decisions lately. And they do have a good sense of responsibility. OK. They will be fine.
Husband: We could ask my mother to stop by and check in on them to be on the safe side.
1. leave alone 让。。。独自（在家）或不陪伴
2. equal to the task 称职/胜任
3. unsupervised 不用人管
4. mature 成熟的
5. wise 明智的
6. on the safe side 确保安全
