He waited ________ the volcano became quiet and he was able to return two days later.
The students spent as much time getting trained as they ____ studying.
——Did your sister pass the exam? ——She failed and is in low spirits. ——I’m sorry for her. ——____.
That she hadn’t kept her ____ on her work resulted in the failure.
Jack felt unhappy as they all went outing ____ him.
The police have ____ power to deal with such matters by ____ law.