______ the worker’s working efficiency, the manager will allow him to have a coffee break.
| A．Improving | B．To improve | C．Having improved | D．Improved |
The tomato juice left some _____ on a customer’s skirt, which made the waitress nervous.
| A．signs | B．points | C．tracks | D．spots |
The notice says “No Photos!” so reporters must ask _____ before taking photos inside the museum.
| A．independence | B．permission | C．advice | D．suggestion |
Nowadays, people get news around them and about the world from _____ media: on TV, on the radio, in the newspaper or on the Internet.
| A．formal | B．ordinary | C．various | D．normal |
The students in that school are not ____ just to enjoy works of art; they hope to create some themselves.
| A．clever | B．confused | C．confident | D．content |
It is _____ colder than yesterday; put on more clothes or you will catch a cold.
| A．frequently | B．fortunately | C．slightly | D．generally |