谁知道 A series of debates between the lectures____scheduled fo

谁知道 A series of debates between the lectures____scheduled fo A series of debates做主语时,谓语动词用单数,为什么? Between us,why there is a series of problems? the last of a series of competitions the rise and fall of relevance debates 英语翻译Do you know about a series of books that say they are”fo a series of a series of . 英语翻译After the Restoration,the parliament passed a series of the scientists needed to do a series of scientific experimen The series of predictable changes that occurs in a community 英语翻译THE MAKING OF A NATION - American History Series:Finding