—Will you attend the meeting this afternoon? —But I ________ told anything about it.
Tom went off to the EXPO Garden with his friends, __________ an exciting day of discovering the unique culture of each nation.
Now that you are a college student, you should learn to be __________ of your parents' help.
Tom as well as his parents __________ to work on foot every day.
Many experts hold the view __________ teacher's development is __________ the key to better education lies.
A driver should __________ the road when __________.