17. The girl lost her balance and fell off the balance beam.
小女孩失去了平衡,從平衡木上摔了下來。
18. She rolled the socks into a ball.
她把襪子卷成一團。
19. How did you enjoy the ball?
你們在舞會上玩得高興嗎?
20. A band of robbers held up the train.
一群強盜搶劫了火車。
21. The town stands on the left bank of the river.
城鎮位于河的左岸。
22. He has a large deposit in the bank.
他在銀行有大筆存款。
23. The organ has two banks of keys.
那架風琴有兩排鍵盤。
24. Clouds are banking up.
云層正在堆積。