经理向我们保证项目正在按计划进行。

The manager ___assured us that the project was on schedule.

我可以向你保证，你的个人信息在我们这里是绝对安全的。

I can ___assure you that your personal information is completely safe with us.

他迅速向他担忧的父母保证他已经安全抵达。

He quickly ___assured his worried parents that he had arrived safely.