Chọn đáp án đúng
19. The referee's _______ is the most important in any sport competition.
a. decide b. decisive c. decision d. decider
20. _______ players are not allowed to interfere with the opponent's movements unless the player is
holding the ball.
a. Defense b. Defensive c. Defender d. Defensively
21. _____ the start of each period, both teams line up on their own goal line.
a. In b. For c. From d. At
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