I am my guandmather's g_. grandson孙子
thick-thin 厚-薄
ugly-beautiful 丑陋-美丽
buy-sell 买-卖
open-close 开-关
black-white 黑-白
searching
tenth
teacher
"英语中不定冠词a用于以_开头的单词前,定冠词the用在以_开头的单词前."这题...好像没有a和the没有特别规定吧...
D.世界贸易组织(World Trade Organization)
B
A