With the word "PM2.5"______ heard and seen in our life, people become more and more concerned about air pollution.
—Thank you for joining in our conversation tonight. —_____.
MoYan, _______ Chinese writer, has won the2012 Nobel Prize in Literature, which is _______ great surprise.
–We’re going to visit our teacher this weekend, would you like to join us? —______. I’d love to.
He said _______, but actually he didn’t keep his promise. That’s to say, he didn’t show up.
Only those who have reached the agreed standard for their event will______ as competitors.