—Doyouknowhowteawasinvented?—Itissaidthatteawasinvented...

问题详情：

—Do you know how tea was invented?

—It is said that tea was invented ________.

A. by accident  B. on display

C. on sale      D. in surprise

【回答】

A

知识点：介词和介词短语

题型：选择题