The gym is a public place, so you should be ________ and leave all the machines clean after using them.
| A．considerate | B．cautious | C．subtle | D．modest |
______ advertisement uses ______ words and pictures the advertisers think of to convince people to buy ______ product or________ service, or to believe in an idea.
| A．An; the; a; / | B．An; /; the; a | C．The; /; a; / | D．The; the; /; the |
This process has not only laid a solid foundation for China to develop into the future, but also _________ the prosperity(繁荣) of Asian economy and the world economy.
| A．depended on | B．contributed to | C．approved of | D．sweep up |
Keep on trying!________ practice is the groundwork for success in playing the piano.
| A．Instant | B．Constant | C．Eager | D．Demanding |
Geologically Diaoyu Islands are ________ Taiwan Island. The waters between the islands and Taiwan are only 100 to 150 meters deep.
| A．attached to | B．divided into | C．separated from | D．cut off |
The lecture was going well until the projector(幻灯机) ______ and put the professor off his stride.
| A．broke down | B．broke up | C．broke away | D．broke off |