The professor gave orders that the test ____before 5:30.
We have every reason to believe that 2008 Beijing Olympic Games will besuccess.
He has worked the maths problem for nearly an hour but he simply can’t work it. On ;atB. on ;out C. at ;up D. for ;out
Every means ______ tried but without much result.
______ is to attend our evening.
If you keep __________ English, you can learn English well.