I know one of the things I was unsure about was __________ hard it would be to climb this mountain.
A warm thought suddenly came to her____ she might use the pocket money to buy some flowers for her mother’s birthday.
A government official was murdered in his own house yesterday and the police are collecting evidence that is ______ to the case.
Those who suffer from headache will find they get_____ from this medicine.
The officer ______ those who lost sons or husbands in the mine accident last month.
Tom is going to talk about the World Expo in Shanghai, but I’d rather he ______ on the World Cup.