Was it not until you began to work ____ how much time you had wasted?
| A．did you realize | B．that you realized |
| C．did you not realize | D．that you didn’t realize |
He began to take political science___only when he left school.
| A．strictly | B．truly |
| C．carefully | D．seriously |
Despite such a big difference in___towards what one eats,there is no doubt that people in the west regard the Chinese food as something special.
| A．point | B．idea |
| C．attitude | D．sight |
Water can absorb and give off a lot of heat without big changes in temperature,thus creating a___environment.
| A．peaceful | B．sensitive |
| C．common | D．stable |
If we can___our present difficulties,then everything should be all right.
| A．come across | B．get over |
| C．come over | D．get off |
People try to avoid public transportation delays by using their own cars,and this___creates further problems.
| A．in short | B．in case |
| C．in doubt | D．in turn |