Complete the sentences ( Hoàn thành các câu sau) 1. The bridge near Baten broke in 2012 because of________ 2. Villagers in Zhang Jiawan hold the ladder when someone else is climbing because_________ 3. The daily commute of children in the Rio Negro Valley is breathtaking because they ride on a metal cable______ 4. The cable is too dangerous when it rains, so children in the Rio Negro Valley_____