Because ”because ”who could have done it? 
The person who did it is still unknown.
There is nobody that could have done it.
The two men in the shiny shirts watched logs get lifted.
It costs quite a bit of money to start a new hobby.
Dents into holes.
It must be encouraged to be sensitive to differences.
The woman is standing up on a bicycle riding through a city.
IDAs help low-income families save money.