问题
选择题
From the dates ________ on the gold coin, we know that it was made 500 years ago. [ ]
A. marking
B. marked
C. to mark
D. to be marked
答案
答案：B
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From the dates ________ on the gold coin, we know that it was made 500 years ago. [ ]
A. marking
B. marked
C. to mark
D. to be marked
答案：B