She had prepared carefully for her English examination so that she could be sure of passing it on her first ________. 

—Mary was being badly treated when John happened to pass by and helped her out.—I think it was not a pure ________but had been well planned.

The girl got nothing in ______ for her kindness, which made her very sad.

As a result of destroying the forests, a large ________ of desert ________ covered the land.

The _____ of the trees in the water was very clear.