问题
选择题
They are very familiar with this kind ofbusiness, so there's no need to be______about the outcome. [ ]
A. enthusiastic
B. optimistic
C. concerned
D. controversial
答案
答案：C
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They are very familiar with this kind ofbusiness, so there's no need to be______about the outcome. [ ]
A. enthusiastic
B. optimistic
C. concerned
D. controversial
答案：C