Is _______ necessary_______ the workers wear uniforms at work?A. it, for B. this, to C. it, that
People are encouraged to ________ paper and water for a better environment.
Turn off the water while you ____ your teeth or washing your face.
I’m not surprised at the ending of the movie because I ________ the story.
It ________ me an hour ________ to school every day last term.
She _______ for eight years and now she has a son.