Here is my question, are both of the following acceptable?
I start dieting after Christmas.
I will start dieting after Christmas.
This is the task from Oxford English Grammar Advanced.
Note: I know the answer, because I have the key, but in my opinion both sentences are grammatically correct, taking into account what we want to ephasize, so that's why I am asking.
EDIT: thank you Edwin Ashworth. What about these sentences :
Rob comes round after 7.
Rob is coming round after 7.