问题
选择题
The first textbook _______ 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
答案
答案：D
主要测试非谓语动词。过去分词作定语表被动、完成；而现在分词的被动式作定语，则表进行、被动。由句子可知此处textbook和write之间为被动关系。
