_____ to his research work, the professor heardlittle about any other things.
| A．Devoting | B．Devoted | C．Having devoted | D．To devote |
Simply ring me up, _______I’ll come to your help as soon as possible.
| A．so | B．and | C．but | D．or |
Environment-friendly Olympics requires Beijing to improve its environment, _______ turning it into an ecology-friendly city.
| A．eventually | B．specially | C．absolutely | D．traditionally |
Over time,__________custom of kissing developed as_______way for adults to express their love for each other.
| A．a; the | B．a; a | C．the; the | D．the; a |
If we ___ the other road ,we might have arrived here in time for the meeting.
| A．take | B．had taken | C．took | D．have taken |
Studies show that people are more_______to suffer from back problems if they always sit before computer screens for long hours.
| A．likely | B．possible | C．probable | D．sure |