句型转换（含缩写词）1:it is my first time to be in a plane,so i don't

句型转换（含缩写词）
1:it is my first time to be in a plane,so i don't know what i do.(同意句转换)it is my first time to travel( )plane,so i don't know what( )do.
2:you become a professional soccer player.you well never go to college.( 用if连成主从复合句)
3：“i am popular at school”he though.(将直接引语改为间接引语)