Only when he met the girl his aunt introduced to him ____ that he had seen her before.

Never in my wildest dreams          these people are living in such poor condition.

Once          a difficult and even dangerous place , Vietnam is now a friendly detestation that welcomes visitors from all over the world        .

______ he explained it to me did I make sense of what he said.

----- I don’t know about you, but I’m sick and tired of this weather.----- _____.I can’t stand all this rain.