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If you are worried that the tickets will be sold out,you can buy one ________.

A. in time　　　　　　　 B. in advance　　 C. on time　　　　 D. from time to time

If you are worried that the tickets will be sold out, you can buy one ________.

A. in time　　　　　　　 B. in advance　　 C. on time　　　　 D. from time to time