A recent study has come up with _____ unexpected conclusion that ____ Africa elephants should be divided into two different species.
| A．a, the | B．an, the | C．an, an | D．the, the |
It must have rained last night, ________ the ground is wet now.
| A．for | B．because | C．since | D．now that |
The serious expression of the captain kept his crew _________.
| A．in the distance | B．from a distance | C．in a distance | D．at a distance |
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 |