问题
单项选择题
"Have you ever gone water-skiing before ""Oh,yes______."
A．a dozen of time
B．dozens of times
C．dozens of time
D．dozen of time
答案
参考答案：B
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"Have you ever gone water-skiing before ""Oh,yes______."
A．a dozen of time
B．dozens of times
C．dozens of time
D．dozen of time
参考答案：B