12. Before Mr. Hagen and his wife bought a van, they__________.
　　 A. sold their old house 　　　　　　　　　　 B. moved to their grandparents’ house
　　 C.built a new place for a van 　　　　　　　 D. sold their second car
　　 13. A motor home is usually owned by a family with__________.
　　 A. a baby 　　　　　 B. much money 　　　　　C. more than two children 　　D. interest in vans
　　 14. Americans usually use motor homer____________.
　　 A. to travel with all the family members of holiday
　　 B. to do some shopping with all the family members
　　 C. to visit their grandparents at weekends
　　 D. to drive their children to school every day
　　 5. Motor homes have become popular because___________.
　　 A. they can take people to another city when people are free
　　 B. they can let families have a happier life when they go out for their holidays
　　 C. some people think motor homes are cheap
　　 D. big families can put more things in motor homes