promise

我保证我会按时完成作业。

I ___promise that I will finish my homework on time.

我今晚会收拾好东西——这是一个承诺！

I'll put my things away tonight - and that's a ___promise!

我今晚会整理我的东西——这是个承诺！

I'll tidy my things away tonight - and that's a ___promise!