找两道英语.容易出错的选择题.要求讲解详细.

******习题一，-Did they all pass the driving test?
-No._________only three of them who passed it.
A. there were B. It was
答案B
解析：A: no 加上句号 已经对问句作了回答。it was .... 是对问句的补充回答。 用的是强调结构 it is ...(强调成分)that/who + 句子 。there be一般表示有的意思，一般用在某地有什么
而这题强调的是“通过测试”，所以回答是“考试只有三个人通过”，所以主语是“通过考试”，用It；It是形式主语，真正的主语是who后面的词‘pass it’。
比如：It was impossible to be use it. It是形式主语，真正的主语是use it 。
*****习题二，The committee ________over the problem among themselves for two hours.
A. has argued B. has been arguing C is to argue D. have been arguing
答案D
解析：题中时间状语"for two hours"给了最好的提示,应该用现在完成时态或现在完成进行时.表示"已经(不停地)争论了两个小时了",排除C.
另外,committee当被看成是一个集体时,视为单数;当被看成组成它的各个成员时应视为复数.题中的代词"themselves"给出了明确的提示, committee 在此应视为复数,故而排除A和B.