唐诗中有“黄河远上白云间”“不尽长江滚滚来”的诗句，这动人的诗句生动、形象地反映了这两条大河蕴藏了大量的  ____   能。

下列各句中，没有语病的一项是（  ）

修改病句

小组讨论会上，大家的发言很猛烈。​

用所给词的适当形式填空

1. It's not easy for some students ____(get) to school.

 2. Sometimes he gets up late, so he runs____ (quick) to school.

3 . Thanks for ____ (help) me so much.

4 . My uncle is sixty years old. It's his ____   (sixty) birthday today.

5 . Liu Lu ____ (cross) the river on a ropeway every day.