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The first text books （） for teaching English as a foreign language came out in the 16th century.

The first text books （） 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
正确答案：D

标签：智慧树高职英语章节测试知到高职英语章节测试

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