1. I saw the ______(happy) from his face and tried to cheer him up in my own way. 2. We'd better eat as ______(health) as we can and not go to bed too late. 3. Some animals are ______(active) during the daytime, but they are active during the night. 4. My mother has got a bad toothache so she has to go to the ______(dentist). 5. He had a party to celebrate his father's ______(forty) birthday.