It was not until dark _____ he found _____ he thought was the correct way to solve the problem.
My parents used ________they had to get a new car for my brother.
In ____old society many yang women died by so strange and cruel ___custom.
No matter how bright a talker you are, there are times when it’s better ______ silent.
We laugh at jokes, but seldom __________ about how they work.
There is ___________ as a free lunch.