题目
The survey——recently showed that about 1.7 billion people all over the world watched the opening
opening ceremony of the 29th Olympic Games.
A.carrying out B.carried out C.was carrying out D.was carried out
opening ceremony of the 29th Olympic Games.
A.carrying out B.carried out C.was carrying out D.was carried out
提问时间：2021-03-24
答案
举一反三
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