Please excuse me _______ your letter by mistake.
How can school ban mobile phones completely __________ some of the parents simply don’t follow the rule?
A Beijing hospital will pay Chinese actress Fan Bingbing 100,000 yuan after a second court decided________the star.
The wonderful time they had been looking forward ____ at last.
It was __ _ that he had to ask for help.
Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.