The elevator in the teaching building was always in the summer vacation. That was why I chose to climb the stairs instead.
Men and women should be treated equally according to the law, but ____ there is great room for improvement.
_____ to his research work, the professor cared little about any other things.
His parents always advised him____ too much time on the computer, but he still sticks to doing it.
The soldiers were fighting bravely their people _____ the invaders.
Two dogs_____ a bone, and a third one ran away with it.