Does it make sense?

When do you expect everyone to arrive?
You can't expect your son to stop smoking when you do it yourself. (You can't expect your son to stop smoking if you smoke yourself.) 
What do you expect the book will to be about? (you can use "will" but it's sort of strange in that sentence. We usually say "What do you think the book will be about?")
What does she think what must have happened? What does she expect what to have happened?
A strong family is just a matter of patience.
Learning languages is a matter of hard work.
I suppose they will persuade them, it is only a matter of time.
No matter how many much efforts you made make for in achieving your goal, only the goal has the matters.