高等继续教育 / 大学英语II
正确率：100%
题型描述: 单选题
Johnˊs father _ _ _ _ _ _ mathematics in this school ever since he graduated from Harvard University.
A. taught
B. teaches
C. has taught
D. is teaching
Johnˊs father _ _ _ _ _ _ mathematics in this school ever since he graduated from Harvard University.
A. taught
B. teaches
C. has taught
D. is teaching
参考答案：