It's not wrong. But in this type of test, you usually have to pick what the examiner thinks is the correct or most likely answer.
The phrasegoing a long way ahead makes me think that in this particular case the examiner may not even be a native English speaker. More natural isgetting a long way ahead.
If you are getting ahead, you are getting ahead of someone, ahead of some other people, ahead of some specific other people, not just anybody who happens to show up. So if you get ahead, you may need to wait for the others (whom you are getting ahead of) -- not just any other people that happen to be around.