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()4.After a close talk with the teacher, Tom has become a better student than ________. A．that used to be B．he used to C．he was used to D．he used to be 4．D。本题是对英语中动词不定式省略的考查。考生易错选B，认为只保留到不定式符号to即可。分析句子结构可知，used to be 表示“过去……”；当动词不定式中有be动词或have时，要对其进行保留；而在其他情况下保留到不定式符号to 即可。 ()5.—What should I do with this passage? —________ the main idea of each paragraph. A．Finding out B．Found out C．Find out D．To find out 5．C。本题考查省略回答。此题极易误选A，考生会认为是动名词短语作do的宾语。其实我们把该选项代入题目，便发现不符合题意。此题应选C，完整的句子应为：You should find out the main idea of each paragraph.句意：——我应该怎么处理这篇文章？——(你应该)弄清楚每段的中心思想。 ()6.—Who's made so much noise in the garden? —________ the children. A．There are B．They are C．That is D．It is 6．D。考查强调句型的省略。根据本题问句的结构，“Who”是主语，“has made”是谓语，可以断定答句中的“the children”是用来作句子的主语的，即：The children have made so much noise in the garden.答语用强调结构来强调主语the children。完整的答句为：It is the children who have made so much noise in the garden.其他选项均属“答非所问”。 | 
