What rules do I have to keep while working here—______________, you must always wear your uniform.

Bob likes the camera very much because it can be _______ to take pictures in cloudy or sunny conditions.[ ]

Earth Day is a reminder that we need to ______ the world we live in and that we should learn to respect life and nature.

Without her glasses, she was _______ blind.

Have you finished your homework ________ –Not ________. I was playing computer games.