问题
选择题
Hiking is_____ great fun. You will get close to _____ nature and take exercise at the same time. [ ]
A. a; the
B. a; 不填
C. 不填; the
D. 不填; 不填
答案
答案：C
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Hiking is_____ great fun. You will get close to _____ nature and take exercise at the same time. [ ]
A. a; the
B. a; 不填
C. 不填; the
D. 不填; 不填
答案：C