摘要:( ) -What class are you in? -I’m . A. in class 3, grade 7 B. in Class 3, Grade 7 C. class 3, grade 7 D. Class 3, Grade 7 分析:B class, grade后接数词作专有名词时, 单词首字母要大写, 同时在某年级某班要用介词in, 故选B.

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