Definition: to feel guilty or sorry about something that has happened Level: B1
我因为让她失望而感到内疚。
I ___felt ___bad ___about letting her down.
弄丢了你的书，我感到非常抱歉。
I feel so ___bad ___about losing your book.
别为那个错误感到难过；每个人都会犯错。
Don't ___feel ___bad ___about the mistake; everyone makes them.
