尽管有指控，他的同事们支持他，相信他的正直。

Despite the accusations, his colleagues ___stood ___by him, believing in his integrity.

他承诺无论面临什么挑战，都会支持他的姐姐。

He promised to ___stand ___by his sister no matter what challenges they face.

真正的朋友总是在困难时期互相支持。

True friends always ___stand ___by each other during difficult times.