The airport ______ next year will help promote tourism in this area.
| A．being completed | B．having been completed |
| C．completed | D．to be completed |
I like getting up very early in summer. The morning air is so good______.
| A．to breathe | B．to be breathed |
| C．breathing | D．being breathed |
（）____your own needs and styles of communication is as important as learning to convey your affection and emotions.
| A．Understanding | B．To be understood |
| C．Being understood | D．Having understood |
Drivers are warned that it is dangerous to talk on the phone while________.
| A．drive | B．driving |
| C．drove | D．to drive |
Research found that children who drank mainly soda were more than twice as likely as those who drank no soda _________ signs of aggression.
| A．showing | B．shown |
| C．to show | D．show |
that the country leaders can lead them out of the financial problems, people are becoming more optimistic about the future of the country.
| A．Convincing | B．Having convinced |
| C．To convince | D．Convinced |