问题
选择题
I don't think he tried his best to learn English, ______? [ ]
A. did he
B. do I
C. didn't he
D. don't I
答案
答案：A
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I don't think he tried his best to learn English, ______? [ ]
A. did he
B. do I
C. didn't he
D. don't I
答案：A