All the citizens, young and old, walked and sang, beautifully ______ in new clothes of all kinds, _______ the success of their football team.
Mr. Li is __________ chairman of the meeting.
This school was the first __________ textbooks as well as reading materials.
You can never be __________ when crossing the street.
—He was nearly drowned once. —When was __________? —__________ was in 1998 when he was in middle school.
1 could just see a car in the distance, but I couldn't __________ what colour it was.