1._____the first and largest ethnic group to work on the con

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1._____the first and largest ethnic group to work on the construction of the transcontiental railroad in the United States.
A.Chinese were B.The Chinese were C.Chinese was D.The Chinese were
2.A group of spectators was dispersed by the police who_____ at the scene of the accidents within minutes.
A.were B.have been C.was D.has been
给的答案是D A
B是The Chinese was
我认为第二题里面的who引导的句子是用来修饰警察的，但是为什么是单数，而不是复数呢？
修饰围观者么？句子的意思可以这样理解吧：一群围观者被几分钟之内就赶到事故现场的警察驱散开了。

1、the +形容词,表示一类人或者事物,不是单数,可以理解为集体名词如 people 动词用复数
举例：比如the old ——老年人,the young ——年轻人
2、the police是固定用法,和上面the chinese 有相似,指的是“警方”,也是整体而不是单一所以语态用复数.而这里的时态只是表示过去某一时刻的状态,并不强调前后结果与完成时态无关,所以用一般过去时,表示状态在某个地方就是be at somewhere .你说的句意正确,一群围观者被几分钟之内就在事故现场的警察驱散开了.修饰的是the police,是the police 的定语,你划分一下句子结构就可以发现who后面的其实与主句是无关的,只是修饰它前面的名词the police.

英语翻译The form and magnitude of ethnic mobilization depend on 英语翻译"on receipt of documents conforming to the terms and con The first group to touch the blackboard gets 1 point. you are the first to join my e firend group 英语改错题On the first day I went to work in a restaurant,my boss 英语翻译as the first and largest organization of its kind in chi 1.work must come first!when did you first go to the zoo? On the playground______a teacher and a group of students. chinese citizens_the largest group of immigrants to Australi The group,which is calling itself the "Suburban Caucus," con _____the lights off,we could not go on with the work I came back from holiday on Sunday and went to work on the _