---Laura calls on her teacher pretty , doesn’t she?
---Yes. At least three times every week.
A. finally
B. officially
C. frequently
D. gradually
网友回答
A. finally
B. officially
(答案→)C. frequently
D. gradually
解析：词义辨析。A.最后 B. 正式的 C. 频繁的 D. 渐渐的。句意：劳拉给她的老师打电话相当频繁，是吗？是的。最好每周三次。故选C。