Without the teahcer’s help, I ___ the exam.
When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.
In ____ accident _____ knowledge of first aid can make _____ real difference.
In order to continue to live well when we leave school, we must _______ learn some useful skills as well as study in the school.
In recent years, laws have been passed to stop wild animals from _______.
To their great _______, they found their son arrived home safe before the storm.