All the students at school are required to ____ lectures by the experts on howto save themselves when accidents occur, such as fires, a gas leak and so on.
All the students in our class are working hard every day, which ___ to be a good result in the coming 2012 NMET. A expects B. promises C. supposes D. thinks
—These days, he has stayed up late into night in order to get good marks in the following monthly test. ---It’s no ____ that he seems tired and asleep in class every day.