问题
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
Tina had nothing for supper, ___ she—___ . She had some bread and milk.
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I’d like to join the English Club. I can’t speak English very _________.