The secretary and principal作主语为什么是单数?

The secretary and principal怎么翻译? The secretary and principal作主语为什么是单数? THE FALL OF ADVERTISING AND THE RISE OF PR怎么样 the Secretary of State Secretary of the Army 英语翻译The secretary and treasurer is absent.Ps：在这一句话中的The secretary and treasurer 怎么翻译 我们老师说是 会计 work and pensions secretary是什么意思 The secretary both speaks and writes Spanish. 他的谓语动词是什么?是单数还是复数? 为什么谓语动词用 is The manager and secretary is in charge of his factory the manager and secretary are in charge of this factory 改错 还要说明为什么 为什么谓语动词用 is The manager and secretary is in charge of his factory secretary to the treasury是什么意思 financial secretary to the treasury we shall need a secretary to keep the records of the club,and write and answer challenges.''翻译 both the secretary and the manager have agreed to cancel the meeting这里的谓语have求解释 The dutied of the secretary are to receive visitors,open the mail and to type letters.为什 PR and Event Management Expert English 有句话不懂,The meeting bringing together Secretary of State Hillary Clinton,Treasury Secretary Timothy Geithner and their Chinese counterparts was dominated by the economic track,and the need for the 2 powers to coordinate efforts to ove