It was ______ hard work, but completing it gave me _____ deep sense of satisfaction.
Once a decision has been made, all of us should ______ it.
Before the war broke out, many people ________ in safe places possessions they could not take with them.
It’s ten years since the scientist ________ on his life’s work of discovering the valuable chemical.
To keep healthy, Professor Johnson _______ cycling as regular form of exercise after he retired.
Helen always helps her mother even though going to school ______ most of her day.