It is only a question which, for instance, my friend is asking me, and I would like to know which one is not right. A few answer choices are available against each question. Please let me now which ones are not correct, and also please provide necessary explanation, so that it would be helpful for an English learner.
Question : Will you be travelling with children?
Answer 1: Yes. I will be travelling with them.
Answer 2: Yes. I will be doing so.
Answer 3: Yes. I will be.
A few answer choices using "so". Please also state that which of the following answers are wrong, with explanation.
Answer 4: Yes. So will I be .
Answer 5: Yes. So will I be doing.
Is there any difference between these answers?
Question 2: Will you travel with your children?
Answer 2a: Yes, I will do so.
Answer 2b: Yes ,so will I.