问题
选择题
Keeping a diary is ____ good habit, by which you'll make ____ great progress in writing. [ ]
A. a; a
B. a; 不填
C. the; a
D. the; 不填
答案
答案：B
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Keeping a diary is ____ good habit, by which you'll make ____ great progress in writing. [ ]
A. a; a
B. a; 不填
C. the; a
D. the; 不填
答案：B