Tom is a student( ) No.2Middle School .应添介词什么,为什么

Tom is a middle school student . 为什么是Tom is a new student 而不是Tom is the new student Tom is a student.He is in Class One.合并成一句.Tom is a student( )he is in Class One. Jim is not a student.Tom is not a student,either同义句_Jim_Tom is a student Tom is a good student .Mary is a good student合并成一句大神们帮帮忙 Jim is not a student.Tom is not a student,either.（合并为一个句子） Jim is not a student.Tom is not a student,either.(合为一个句子） Jim is not a student.Tom is not a student,either.(合并为一个句子) TOM IS A GOOD STUDENT变为否定句 Tom is a very good student是哪种句子类型. he says tom is a good student改为间接引语 Tom is a new c__ student from Australia Tom is also a good student.（保持原句意思） Tom is a good student ________ ________. Tom is still a student.（同义句）Tom is still (填空）（填空） Tom is a good student.(改为一般疑问句)_______ _______a good student? tom is a student.bruce is a student,to 合并成天一句合并成一句。tom and bruce （）（）student Tom isstill a student.（同义句）Tom is still （填空）（填空）. Tom is a good student.Mary is a good student,too.(合并成一句)___ tom ___ Mary ___ good students要说出为什么来啊