The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.
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.
The final examination is coming up soon. It’s time for us to _______ our studies.
After a long way she was tired and her legs ___________.
Failure is the mother of success. ______your courage.