This is _____ lesson.
—What do you expect ______ from your hard work?---Nothing, I just want to try my best.
Though Mandela﹙曼德拉﹚____27 years in prison﹙监狱﹚, he thought it meaningful.
You should read the article as ____ as I do to know what the writer really wants to tell us.
--________do you go to the dentist? --Let me see, twice a year, maybe.
—Did you do __________ on vacation? ---Not really. I just stayed at home and helped mom.