Please excuse me _______ your letter by mistake.
A government,which is responsible for society,must________to its people how important the method is to prevent AIDS.
His mother had thought that it would be good for his character to________from home and earn some money on his own.
We live in an age________many things are done on computer.
I have offered to paint the house________a week's accommodation.
After that,he knew he could________any emergency by doing what he could to the best of his ability.