题目内容：

Lots of American families like to have a h 1 in summer.Summer a good s 2 for holiday.It is often
Many families travel by car or train to see i 9 places in their own countries.
Their favourite cities are New York,Chicago,Miami,San Francisco and Los Angeles.
Not everyone likes to go to b 10 cities.Some families travel to mountains or
beautiful valleys.(峡谷)
9.__________ 10.__________

优质解答

9 interesting
10 big