_______ the smoke come out of the building, my first thought was to call the fire department as soon as possible. 

It was the first time Mary _____ such a big opening ceremony.

She was grateful _____ George _____ all _____he had done.

There is no doubt ________ those who work hard will succeed sooner or later.

Don't be discouraged．___things as they are and you will enjoy every day of your life．