26. Flying across the Atlantic for the first time was a great (achieve) ________ (achievement)27. The number of students in our department (be) ________ more than 500. (is)
28. The lecture was so (bore) ________ that everyone went to sleep. (boring)29. I am sorry that I have kept you (wait) ________ for so long. (waiting)30. He made a suggestion that they (visit) ________ their friends in New York. ((should) visit)31. You’re always forgetting your assignments(n.任务,工作;作业,功课). You’re a very (f