【Forthelasthundredyears，peopleoftwovillagesinSumatrahaveuseda30-metre-longbridge．It（4）___（make）oftheroots（树根）oftwotreesoneachsideoftheriver．PakihSohan，ateacher，begantobuildthebridgein1】

　　For the last hundredyears，people of two villages in Sumatra have used a 30-metre-long bridge．It （4）___（make） of the roots（树根）of two trees on each side of the river．

　　PakihSohan，ateacher，began to build the bridge in1890．Because of the river，many children（5）___（not，go） to school．It took Pakih Sohan more than 26years to make the strong bridge．Thebridge（6）___（become） stronger and stronger because the roots grow all the time．

　　On rainy days people should cross the bridge carefully．When it（7）___（rain），the bridge will be come wet and slippery（滑的）．More and more people travel there just to take some photos and try crossing it．