Don’t tell him the bad news until he finishes his exam.
The secret was not discovered until he was dead.
I won’t stop shouting until you let me go.
A: I heard that Bill got divorced.
B: Yes, he is really sad now.
A:I thought he wanted to get divorced because he didn’t love his wife anymore.
B: Yes, but he didn’t realize how much he needed her until they got divorced.
A: Yeah. Well now it’s too late. She already has another husband.
B: That’s too bad. Sometimes people often don’t appreciate what they have until they lose it.