– Alex, how long you in this school?
--For three years. I’ll graduate in July.
A. are; studying
B. do; study
C. will; study
D. have; studied
网友回答
A. are; studying
B. do; study
C. will; study
(答案→)D. have; studied
解析：句意：亚历克斯，你已经在这个学校学习了多久呢？有3年了。我将在7月份毕业。后文有For three years.三年的时间，表示一段时间，句中用现在完成与how long一起连用，故选D