问题
选择题
_____ in the fields on a March afternoon, he could feel the warmth of spring. [ ]
A. To walk
B. Walking
C. Walked
D. Having walked
答案
答案：B
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_____ in the fields on a March afternoon, he could feel the warmth of spring. [ ]
A. To walk
B. Walking
C. Walked
D. Having walked
答案：B