do you know when and where the youth olympicgame was first held?________in singa
________in singapore from august 14 to august 26,2010.
为什么填it was 不填it did
人气：371 ℃ 时间：2020-04-05 03:10:00
解答
因为你问句里面是was.它填it was 实际上是把first held省略掉了.————It was（first held）in Singapore from August 14 to August 26,2010.
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