i am not sure if i am going to tom is birthday party.i may go to the concert (instead)?

问题描述:

i am not sure if i am going to tom is birthday party.i may go to the concert (instead)?

正确句子应是i am not sure if i am going to tom ’s birthday party.i may go to the concert (instead)?I am not going to Tom's birthday party.I am going to the concert instead.