— Why do we get up so early?
— If we ______ the flight we would have to stay here for another day.

Only when the countries in the Middle East are no longer at war _____able to live a peaceful life.

It was yesterday _____I went to the railway station to meet my uncle.    (    )

  It was in Beihai Park _____ they made a date for the first time ______ the old couple told us their love story.

 .Only when your identity has been checked ________.

lt was his positive attitude to life and hard work _________finally led him to his successful career .

The girl had been suffering from the lung cancer, yet she acted as if nothing__________ to her     while we were together.

The Grand Theatre is located on one corner of________ is called the People's Square.

Only when­­­­­­­­­­­­­­­­­___________ according to the directions can the medicine be quite effective.

Not until all the fish died in the lake __________ how serious the pollution was.