My brother ____ college for over three years. A. has gone to B. has been to C. has been in D. has been for 为什麼答案给的是D,我明白AB为什麼错,可是我感觉应该是C吧,求解释!

COLL The little boy_____ ____ ___is my brother. 句型转换 My brother has some friends in school.( 改为否定句 ）My brother ____ ____ ____ friends inMy brother ____ ____ ____ friends in school. 26、____ like French fries.A.My brother and I B.I and My brother C.My brother and me John is healthier than my brother.改同义句 My brother isn't ____ ____ ____ John. My brother used to be noisy and outgoing.what did your brother ____ ____ ____ ____?改成特殊疑问句, My brother didn't pass the exam.My brother ____ _____ ____pass the driving test. My little brother always gets up very late. My little brother is ____ ______. my brother hunts me when I hide=my brother ____ _____ ____me when I hide My brother went to the zoo ____ underground yesterday. The boy ____ (name) Peter is my brother. I work hard at school.So ____(do)my brother My brother ____(参加)the amy last time My brother has a ____ (collect) of model planes The ____(run) is my brother.填什么 My brother ____(like) seeing movies on weekends. 同义句转换 5.My brother joihed the Army last years.My brother ____ ____ a soldier for a year. I have just received a letter from my brother.（同义句）=I have just ____ ____ my brother.