The teacher entered the classroom, followed by many students. (and)____________________________________
35. Sales of CDs have greatly increased since the early 1990s, when people_____ to enjoy the advantages of this new technology.
34. ________ is often the case, we have worked out the production plan.
33. A man is being questioned in relation to the ________ murder last night.
32. It's ten years since the scientist _______on his life's work of discovering the valuable chemical.
31. -- You haven't lost the ticket, have you?-- _________. I know it's not easy to get another one at the moment.