The left-behind kids(留守儿童)can’t see their parents_________ the parents come back home from work.
________ it snowed heavily yesterday, nobody in our class missed the lesson.
Audrey’s death was a great _______to film fans.
Glass can be _________many wonderful things.
About ______ of the books in our school library are written in Chinese.
The soldiers ___________ a good fight against the enemies.