智慧职教: Why has air travel become a common experience?
举一反三
- 智慧职教: How many businessmen travel by air?
- Bad weather and air traffic are the most common causes of travel disruptions.
- According to the passage， the recent growth in air travel has meant that__________
- The ______ of air travel during this century has made the world seem smaller.
- __ warming has become a common issue of all the human beings.