We use the past simple tense for completed actions in the past and to move the story forward. We use the past continuous to talk about an action that was in progress while or before something else ...

accept responsibility for a task or project, often in addition to one's usual duties. She decided to take on a new project at work, even though she was already busy. He’s always willing to take on ...

The UK Parliament has two Houses that work on behalf of UK citizens to check and challenge the work of Government, make and shape effective laws, and debate/make decisions on the big issues of the day ...