问题
选择题
—Your English is good.
—Thank you. I _______ it for three years. [ ]
A. learn
B. learned
C. have learned
D. had learned
答案
答案：C
搜题请搜索小程序“爱下问搜题”
—Your English is good.
—Thank you. I _______ it for three years. [ ]
A. learn
B. learned
C. have learned
D. had learned
答案：C
H++OH- 
H>0,下列叙述正确的是( )