When did chewing gum become popular in the United States
A: In 1890.
B: In 1819.
C: In 1870.
D: In 1817.
A: In 1890.
B: In 1819.
C: In 1870.
D: In 1817.
举一反三
- Not until the dedication of Yellowstone Park in the late nineteenth century（）a national park. A: the United States had B: did the United States have C: when the United States had D: the United States having
- Passage One When did watches and clocks become common in the United States A: From the 1850s. B: From the 1700s. C: From the 1800s. D: From the 1900s.
- Section BPassage One When did watches and clocks become common in the United States A: From the 1850s. B: From the 1700s. C: From the 1800s. D: From the 1900s.
- 中国大学MOOC: When did tea become popular in China?
- When the author lived in the United States, how did he usually pay?