Water, which seems so simple and common, is ______ makes life possible.
Tom was thinking about how to explain to the teacher why he was late for class, when a good idea ______ to him.
Parents feel they don’t have the ability to influence children’s decisions ______ children feel their parents’ goals are hard to achieve.
The company had about 20 notebook computers but only one-third _____ used regularly. Now we have 60 working all day long.
______ speed and comfort, a bicycle can’t be compared with other means of transportation like car and train.
I would like a job which pays more, but ________ I enjoy the work I’m doing at the moment.