34．hand in　交上来

33．out of class　在课堂以外

32．at the right time　适时

31．far away　遥远

30．thanks to　幸亏；由于

29．point to　指向

28．be covered with　用……覆盖

27．this year alone　只就今年一年

26．in a few years’ time　几年的时间之后

25．the more, the better.　越多越好