With the word “ PM2.5” ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
You’d better________ your scores and see if you have passed the exam.
How did all these _________?
They lived a hard life and were often made _______ for over ten hours a day.
_____ of the students who took part in the military training is 450.
The sales _____ steadily, the factory needs an increasing supply of raw material.