I was just about road a ship came to us.A. traveling on; whileB. to travel on; while C.

发布时间：2020-08-16 09:59:17

I was just about      road      a ship came to us. 
A. traveling on; while
B. to travel on; while
C. traveling by; when
D. to travel by; when

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A. traveling on; while
B. to travel on; while
C. traveling by; when
(答案→)D. to travel by; when
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