问题
选择题
She knows a lot about China as she has been to China ________.
A．for the forth time
B．four times
C．a fourth time
D．for four times
答案
答案：B
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She knows a lot about China as she has been to China ________.
A．for the forth time
B．four times
C．a fourth time
D．for four times
答案：B