Question

_____ you understand the rules of the game, you will enjoy it.

A．Before

B．Even if

C．Once

D．While

Answer 1

C

本题考查连词。before在 ……之前；even if尽管，即使；once一旦；while当……时候，然而，可是。句意：一旦你理解了游戏规则，你就会喜欢它。