19. Have a little chicken, ______?
To our great joy, his health has improved ______.
She likes to have everything in order so that she can ______ them when necessary.
Only when you ______ what you have learned to practice ______ say you have made it.
After the meeting, she invited us to dinner at her home and treated us ______ delicious food.
Knowing how to give first aid really ______ in case of emergency. It can save lives.