问题
选择题
We shouldn't be __________any difficulties. [ ]
A. angry with
B. surprised to
C. afraid of
D. afraid to
答案
答案：C
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We shouldn't be __________any difficulties. [ ]
A. angry with
B. surprised to
C. afraid of
D. afraid to
答案：C
表示为正确的VB表达式应改是（）。