With all the audience ________, the speech began.
| A．sat | B．seating | C．seated | D．having seated |
35. Sales of CDs have greatly increased since the early 1990s, when people_____ to enjoy the advantages of this new technology.
| A．begin | B．began | C．have begun | D．had begun |
34. ________ is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．As |
33. A man is being questioned in relation to the ________ murder last night.
| A．advised | B．attended | C．attempted | D．Admitted |
32. It's ten years since the scientist _______on his life's work of discovering the valuable chemical.
| A．made for | B．set out | C．took off | D．turned up |
31. -- You haven't lost the ticket, have you?
-- _________. I know it's not easy to get another one at the moment.
| A．I hope not | B．Yes, I have | C．I hope so | D．Yes, I’m afraid so |