―________ will you take the entrance examination?― In twelve days.

The math problem was _________ difficult __________ none of us worked it out.

 — David, why are you so excited?—My father has made a _________ that he will take me to Tibet next month.

 —I’m worried about the coming test. —You should work hard for it,_____you’ll have to take it again.

 -Before I enter the competition, I want to know the __________.-The winner can get a gold medal.