The first textbooks ___ for teaching English as a foreign came out in 16th.A.being written B.to be written C.being writing D.written

问题描述:

The first textbooks ___ for teaching English as a foreign came out in 16th.
A.being written B.to be written
C.being writing D.written

D 过去分词作定语

选择D. 因为这里的written for teaching English as a foreign是过去分词短语做the first textbooks的后置定语的,相当于定语从句which/that was written for teaching English as a foreign.