Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.
—Could you tell Lily the meeting place? —Sure, I will __________ when I see her.
Tom tried to __________ in German.
I wonder how many years ago ___________.
He said that he would write to us but so far we ___________ from him.
__________ good exercise.