—How much should I pay for the ice cream?—It's my ______.
E-mail is a valuable _____ for college students at any level.
Lin Fang won first prize in the English contest and her efforts at last _____ .
People _____ a long queue to buy the ticket for the concert.
—Which one of these shirts would you like?—__________. Either is OK.
I got through the written papers, but failed in the __________ examination.