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请帮忙分析两个英语选择题,200分

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请帮忙分析两个英语选择题,200分
(1)
Mr.Reed made up his mind to devote all he had to____some schools for poor children.
A:set up B:setting up C:have set up D:having set up
(2)
The research is so designed that once____ nothing can be done to change it.
A:begins B:having begun C:beginning D:begun
想请人帮助分析与作答,要尽量详细,
请帮忙分析两个英语选择题,200分
答案:(1) B (2) A
(1)Mr.Reed made up his mind //to devote all he had //to____some schools for poor children.
你先把句子划分一下,把结构弄清楚.如上面我用“//”来隔开句子,第一部分Mr.Reed made up his mind表明Mr.Reed下定决心,to devote all he had 表明倾其所有致力于……省略号后面就是要你填的东西,也就是第三部分,这样看来这个空格涉及到devote这个词的用法,有以下两种,很明显答案应该选B.
devote oneself to sth/doing sth
devote sth to sth/doing sth
(2)这题关系到“once”和“begin”的用法.根据句意,once在这里是一旦的意思,后面接一般现在时态,对于begin,你最好去查下字典,并不存在上面好几个人说的“it is begun”的省略用法,因为begin不能用作被动语态,再怎么说,一件事情怎么可以说成“被开始”呢?