问题
选择题
I tried, but, _____, to persuade Holmes to change his mind He was too stubborn. [ ]
A. at ease
B. in trouble
C. by design
D. in vain
答案
答案：D
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I tried, but, _____, to persuade Holmes to change his mind He was too stubborn. [ ]
A. at ease
B. in trouble
C. by design
D. in vain
答案：D