During _________ 3-day conference, global warming became _________ major concern of all the representatives.
A.the; a | B.a; the | C.the; \ | D.a; \ |
相关知识点
推荐套卷
During _________ 3-day conference, global warming became _________ major concern of all the representatives.
A.the; a | B.a; the | C.the; \ | D.a; \ |