--I came ___ two idioms which puzzled me on the cover of an old book which I was looking for a new material in yesterday.---Why not go to the teacher for ___ about them?
Will you________me a favour and carry this box?It’s too heavy for me.
I don't doubt ________the people in Beichuan County will recover from the disaster soon and rebuild their homes better than before.
There is a new problem________in the popularity of private cars that road conditions need improving.
She was ________ mayor of the city for what she had done for the public.
—It sounds to me as if he knows a lot about computers. —He is a person who is fond of________.