I will eating breakfast early tomorrow.  

I would be eaten breakfast by the time you had come home.  

I would have eaten breakfast by the time you came home.  

I would be eaten breakfast by the time you had come home.

I would have eaten breakfast by the time you comes home.

I has been eating when the post arrived.   

 I would been eating when the post arrived.

I was been eating when the post arrived. 

I will/shall have eaten the snacks by the time they arrive.  

I will/shall have ate the snacks when you arrive. 

I will/shall have been eaten the snacks by the time they arrive. 

I will/shall have eat the snacks by the time they arrive

Choose the correct sentence: