The truth, Sir, is that the old man____ across the street when my car hit him.
The professor would like the students to pay more attention to festivals __________ in other parts of China.
Last Monday the teachers and students held a grand ceremony __________ the 80th anniversary of our school.
Driving a car is not as difficult as you imagine, if you __________ the rules.
A good idea __________ to me,and I quickly picked up the phone to tell Jack about it.
So suddenly __________ that people had no time to escape.