.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.
-I heard Back Street would sing at the New Theater.-Where did you _____?
-Are you satisfied with her answer?-Not at all. It couldn’t have been _____.
. -What do you think of the book? -Oh, excellent. It is worth _____ second time.
The three college students did what they could _____ the two children, although they was in danger.
-Have you got your test result? -Not yet. The papers _____.