-What are you busy with ? -The conference _______ in our city next week.
Just before I left London, _____ I sent him a telegram.
If I’m mistaken, _____ you are mistaken too.
If wishes were horses, _____ beggars would ride.
When the last prize had been awarded _____ everybody cleared off.
Although he had only entered the contest for fun, _____ he won first prize.