With the word “PM2.5” ____ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
The thing that ______ is not whether you fail or not, but whether you try or not.
. “Do you know that Jack ______ a postman for about six years?” “Yes, I see.”
“Did you get a job?” “No, I ______, but it’s no use.”
He regards that book _____ one of the worst that he’s _____ read.
. We’re so busy that no one in the office can _____ for any other work.