问题
选择题
I waved to see him off and watched the train until it disappeared .[ ]
A. at a distance
B. from a distance
C. in the distance
D. within a distance
答案
答案：C
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I waved to see him off and watched the train until it disappeared .[ ]
A. at a distance
B. from a distance
C. in the distance
D. within a distance
答案：C