阅读下面短文，用括号内所给动词的适当形式填空， 必要时可加助动词或情态动词。

A

 In recent years, more and more children in the US are interested in learning Chinese and learning about China. Seven-year-old Anna        ____  (study) Chinese for two years in the Confucius（孔子）Classroom in Washington Yuying Public Charter School. During class, Anna and the other children are interested in introducing themselves and teaching visitors how  ____  (say) “hello”, “thank you” and “goodbye” in Chinese.

“When she grows up, she'll be able to communicate with Chinese. I hope she learns Chinese as early as possible,” says Anna's mother. “I   ____  (spend) more on this so that she can get a lifelong skill.”

B

 For the last hundred years, people of two villages in Sumatra have used a 30-metre-long bridge. It ____ (make) of the roots（树根）of   two trees on each side of the river.

 Pakih Sohan, a teacher, began to build the bridge in 1890. Because of the river, many children  ____   (not, go) to school. It took Pakih Sohan more than 26 years to make the strong bridge. The bridge ____  (become) stronger and stronger because the roots grow all the time.

 On rainy days people should cross the bridge carefully. When it  ____  (rain), the bridge will become wet and slippery(滑的). More and more people travel there just to take some photos and try crossing it.