Pronouns, prepositions, conjunctions and articles are( ).
A.open-class words B.closed-class words C.both open-class words and closed-class words D.neither open-class words and closed-class words正确答案B
Pronouns, prepositions, conjunctions and articles are( ).
A.open-class words B.closed-class words C.both open-class words and closed-class words D.neither open-class words and closed-class words正确答案B