问题
选择题
Smith stopped _____ in 1990.[ ]
A. hiccup
B. hiccuping
C. hiccupped
D. hiccupping
答案
答案：D
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Smith stopped _____ in 1990.[ ]
A. hiccup
B. hiccuping
C. hiccupped
D. hiccupping
答案：D