The first textbooks for teaching English as a foreign language came out in the 16th century.
A. to be written
B. written
C. being written
D. having written
网友回答
A. to be written
(答案→)B. written
C. being written
D. having written
解析：
这题考查过去分词作定语的用法：The first textbooks 和write是被动的关系，而且第一本书16世纪已经写成了，所以用过去分词作定语。A项是“将要被写”C项是“正被写”时间都不对，D项现在分词的完成式是不能做定语的。