根据中文完成句子，注意使用单词的正确形式:/n'O6p6D.@;r)_
1. Our classroom is on the9Y/m'O4t3Mfloor.（第三）/n'O6p6D.@;r)_
2. Sally is ,^1{'N+N6K.I+A;r+Z9R6U+K0Z:f)^.（正在爬山）/n'O6p6D.@;r)_
3. Linda is 7}(k'U)L-T)U6I2t8r,D.（生气）/n'O6p6D.@;r)_
4. They are 7A3}+o'g2_;^0M.i9\（正在打篮球）basketball./n'O6p6D.@;r)_