来自陈怀超的问题
【Thefirsttextbooks___forteachingEnglishasaforeigncameoutin16th.A.beingwrittenB.tobewrittenC.beingwritingD.written】
Thefirsttextbooks___forteachingEnglishasaforeigncameoutin16th.
A.beingwrittenB.tobewritten
C.beingwritingD.written

