问题
选择题
John is a(n) _____ caller of my blog and always leaves a few words to me. [ ]
A. official
B. frequent
C. fluent
D. upset
答案
答案：B
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John is a(n) _____ caller of my blog and always leaves a few words to me. [ ]
A. official
B. frequent
C. fluent
D. upset
答案：B
