问题
选择题
_____ he recites 10 words every day and his English has improved greatly. [ ]
A. On average
B. On purpose
C. And so on
D. On and on
答案
答案：A
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_____ he recites 10 words every day and his English has improved greatly. [ ]
A. On average
B. On purpose
C. And so on
D. On and on
答案：A