6. We are looking for types of vehicles that help us to avoid ____________. A. walking B. traffic jams C. rush hours D. traffic 7 . I usually listen to music while I am ....................... a car. A. by B. on C. in D. at 8. Although nuclear power is clean and plentiful, it is not............................... A. dangerous B. unsafe C. safe D. renewed 9. If you want to watch fish swimming around you when you are travelling, take a/an ........ A. airplane B. driverless car C. flying car D. underwater train 10 . Jane .................. for you at this time next week. A. will waiting B. will be waiting C. will be waited D. will wait 11. Open the door, ......................? A. will you B. will he C. wont you D. wont he 12 . The laptop belongs to my sister and my brother. The laptop is ................ A. theirs B. hers C. mine D. His