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.
—Have you got any job offer? —No, I______.
If the weather had been better, we could have had a picnic. But it _____ all day.
I was tired of school work, but my father told me that he didn’t _____school this year.
_____ at his knowledge, all the students showed their respect for their teacher.
He is _____ tearing up what he has written and beginning over again.