The lift in that tall building went wrong and got trapped _____ floors. People in it had no way to get out.
That is not the way ______I do it.
He is working hard, ______will make him pass the final exam.
The reason ______he didn't come was ______he was ill.
This machine, ______for many years, is still working perfectly.
This is the reason ______he didn't come to the meeting.