问题
There are many famous cultural relics in our country, many _______ thousands of years ago.
A:dating back to
B:date back to
C:dated back to
D:were dated back to
B:date back to
C:dated back to
D:were dated back to
正确答案是：
同类题型
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Do you doubt _______ Bill would like to help you translate this novel into English
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