问题
选择题
—How often do you go back to your hometown?
—___________. [ ]
A. Since three weeks ago
B. For three weeks
C. In three weeks
D. Every three weeks
答案
答案：D
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—How often do you go back to your hometown?
—___________. [ ]
A. Since three weeks ago
B. For three weeks
C. In three weeks
D. Every three weeks
答案：D