The house was reduced to _____by the fire _____by a cigarette butt.
— It was careless of you to have left the house without turning off the gas. — My god! _______.
It looks _______ you are ill. You should go to see the doctor.
The great day he looked forward to ______ at last.
We are all looking forward ______ the Great Wall during the National Day.
—Can you give an example to show how useful a computer is? —Sure. ___________ people get ___________ information from it every day.