If ________ the same treatment again, he is sure to get well [ ]

_____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.

The food smelt so ________ that nobody in the restaurant wanted more.

The two sportsmen congratulated each other ______ winning the match by shaking hands

It was not until I came here _______ I realized this place was famous for not only its beauty but its weather.