问题
选择题
I was ___ my hand madly but he never once looked in my direction. [ ]
A. shaking
B. knocking
C. waving
D. trembling
答案
答案：C
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I was ___ my hand madly but he never once looked in my direction. [ ]
A. shaking
B. knocking
C. waving
D. trembling
答案：C
