—What made you so tired?
—__________ driving all day.
| A．Practiced |
| B．To practice |
| C．Practicing |
| D．Practice |
—Why are you so depressed?
—I _____ my MP4 player on the bus．
| A．had lost | B．am lost | C．have lost | D．was lost |
Tired and disappointed, the rescue team finally reached _____ used to be a village．
| A．where | B．that | C．when | D．what |
Noise is unpleasant, _____ when you are trying to sleep．
| A．especially | B．specially |
| C．extremely | D．naturally |
So hard-working _____ that he sets a good example to all the other classmates．
| A．he is | B．is he | C．does he | D．he does |
With more and more forests _____, many animals are facing the danger of dying out．
| A．to destroy | B．destroying |
| C．destroyed | D．to be destoyed |