我告诉他我不会再给他钱了，但后来我动摇了。

I told him I wouldn't give him any more money, but then I ___weakened.

我感到我的抵抗动摇了，最终我允许她待一晚。

I felt my resistance ___weaken and at the end I allowed her to stay for one night.

在压力下，他的决心动摇了，他改变了决定。

Under pressure, his determination ___weakened and he changed his decision.