The first text book，________ for teaching English as a foreign language，came out in the 16th century．
A.having written
B.to be written
C.being written
D.written
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D解析因为主语the first text book与e out之间是动宾关系，所以只能用被动语态，故排除A．又因为to be written表将来，being written表正在进行，都与后句中的在16世纪出版相矛盾，所以选written．written是过去分词，表示被动和完成．