这家新店昨天正式开业。

The new store was ___officially opened yesterday.

新董事的名字将在六月正式宣布。

The name of the new director will be ___officially announced in June.

如果我能回到历史上的任何时间和地点，我会选择第二次世界大战正式宣布结束的那一天。

If I could travel back to any place and time in history, I would choose the day when World War II was ___officially declared over.