What’s this English—It’s orange.

With the word “PM2.5” ____ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.

There are 51 students in Class Three, _____ failed in the test.

32Once he starts a job, he won’t stop ______ it’s finished

12．We have to study for a bright future, so we have to lose some sleep_________we’re worn out