Not until I began to work ________ how much time I had wasted.
| A．didn’t I realize | B．did I realize | C．I didn’t realize | D．I realize |
E-mail, as well as telephones, __________ an important role in daily communication.
| A．played | B．is playing |
| C．are playing | D．play |
The Group of Eight (G8) __________ the eight richest countries in the world.
| A．consists of | B．is consisted of |
| C．is made up | D．consist in |
The cook __________ the best ingredients from both home and abroad to create this dish.
| A．combined | B．considered |
| C．continued | D．contained |
There are many special wildlife species in Australia because it has been __________ from other continents for so long.
| A．prevented | B．protected |
| C．provided | D．separated |
Standards in health care have improved greatly when __________ with 40 years ago.
| A．comparing | B．to compare |
| C．compare | D．compared |