频率表达：often, sometimes — 英语选择题
题目
Lily 爱跳舞（dancing）。一周有 7 天，她一周有 5 天去舞蹈教室练舞，剩下 2 天在家休息，可以说：She ______ goes dancing. 但她只是偶尔在周日画画，可以说：She ______ paints on Sundays.
A. often; often
B. sometimes; often
C. often; sometimes
D. sometimes; sometimes