The first textbook _________for teaching English as a foreign language came out in the

外语类 专四 已帮助 人

The first textbook _________for teaching English as a foreign language came out in the 16th century.

A) writing

B) written

C) to write

D) to be written

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。