"补"is used as "verb "or "noun "
for examples
1.她把我的裤子补(v )得很好。she did a good repair on my trousers.
2.你必须把损失了的时间补(v )回来。you must make up for all the lost time.
3.我的袜子上有块儿补(n )丁 my sock has a mend.
4.这补(n )药会帮助你恢复健康。this tonic will help set you up.
in addition ,give you some phrases about "补"
补充、补给(ji3)、补品、补考、补救、亡羊补牢、
glad to answer your question , i hope i can help you