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英语咨询ThefirsttextbookforteachingEnglishasaforeignlanguagecameout,inthe16thcentury.A.havewrittenB.tobewrittenC.beingwrittenD.written选B为什么不行;要选D

题目详情
英语咨询
The first textbook ___ for teaching English as a foreign language came out ,in the 16th century.
A.have written B.to be written C.being written D.written
选B为什么不行;要选D
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答案和解析
to be 是目的和即将要做的事