We can make some adjustments __________ the reactions of the customers.
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
In fact, _______ one cause that leads to the problem.
I found her sitting in the corner, reading _____ newspaper, with _____ in her eyes.
In this factory, suggestions often have to wait for months before they are fully _____.
After a long walk, they______ pass over the mountain.