频度副词always/usually/often/sometimes的用法 — 英语选择题
题目
Liu Tao 是一位有良好生活习惯的学生。请根据他对一周活动的描述，选择正确的频度副词填空：Liu Tao brushes his teeth in the morning and evening every day from Monday to Sunday, so he ___ brushes his teeth twice a day.
A. sometimes B. often C. usually D. always