20. The American Civil War lasted four years the North won in the end.
---How do you think of his plan? ---I was not a bit surprised, for I had fully expected _____.
---Why are you looking so disappointed , Ken? ---The outdoor concert _____ for tomorrow will be put off.
Many people thought little of me, but I did what _____.
We are still at the airport. If it weren’t for the delayed flight, we _____ the concert right now.
Be careful when you cross this very busy street. If not, you may _____ run over by a car.