排序。
(1) Bill and Willy cheer for Bobby and Sam.
(2) They can’t find the ball.
(3) Sam brings some water quickly and pours it into the hole.
(4) San and Bobby are playing table tennis.
(5) Sam is too excited and hits the ball hard.
(6) They find a hole in the ground.
(7) They find all the balls in the hole.
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