The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons.
| A．saved was teachers’ energy | B．was teachers’ energy saved |
| C．teachers’ energy was saved | D．was saved teachers’ energy |
---Isn’t it time you went to bed, Mike?
---I _____ painting all afternoon, so I have to finish my homework now.
| A．have been practicing | B．have practiced |
| C．was practicing | D．had practiced |
______ is no debating that the Dallas Mavericks will defeat the Washington Wizards in the next game.
| A．It | B．As | C．That | D．There |
---I have looked for my keys everywhere, but I can’t find them.
---Sorry to hear that. You _____ them somewhere.
| A．must lose | B．should lose |
| C．must have lost | D．should have lost |
---What makes him so excited these days?
---________ a key university.
| A．Admitted into |
| B．Admitting to |
| C．Having been admitted into |
| D．Being admitted to |
---You didn’t lock the back door.
---You are wrong. I ______.
| A．have locked it | B．lock it myself |
| C．did lock it | D．do lock it |