A、Saturday classes about language ana culture. B、Private high schools in San Francisco. C、The help of Ameican high school studen

As part of a three-year project, a group of American high school students and their teachers are spending three weeks each summer in Senegal, helping to modernize Keur Sadaro, a rural village three hours from Senegal’s capital, Dakar. The 21 teens from two private high schools in San Francisco, California. This spring before leaving for Africa, they attended Saturday classes where they learned about the geography, language and culture of Senegal. Each year, the students bring athletic equipment, medicine, tools and computers to share with the villagers. In the first year of the project, last summer, a dilapidated French colonial house, inhabited by ducks and chickens, was fixed up as a clinic. During this summer’s three-week stay, the students worked on the village schoolhouse. They helped put a roof on it, install solar panels and lights, lay a floor, and build desks. They taught village teachers how to operate donated comuters.
1.  What’s the topic of this news report?
2.  What’s the students’ work this summer?