______ is even more important is that the earth cooled down, water began to appear on its surface.
We _______ not be embarrassed about our weight now.
I regret ______ those weight-loss pills, because I am now in hospital.
Walking and riding your bike count, and ______ .
Healthy eating along with regular exercise _______ important for your health.
Experts suggest that teenagers _____ at least 30 minutes exercising, five times a week.