问题
选择题
This is a busy port with so many ships _____ every day.[ ]
A. come and go
B. to come and go
C. coming and going
D. come and gone
答案
答案：C
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This is a busy port with so many ships _____ every day.[ ]
A. come and go
B. to come and go
C. coming and going
D. come and gone
答案：C