we have to wait for the traffic lights to change onto green.（有一處錯(cuò),指出改正）
2.she closed the gate to prevent the dog to run away.
3.Although my uncle is old ,but he looks very strong and healthy.
4.Please remember writing to us when you get there.
5.Animals may do like that,but human being shouldn’t.（一至五都是一處錯(cuò),要改正）