1.Let's get back on track or else we'll have to go on all night. Should we add "the" before "track"? 2.Things were clicking for me then. Because we say "The film's clicked with yong people."should we use "with" instead of "for" in 2. Thanks!
I am not a teacher, please correct me if I am wrong.
If you add "the" before track, it will sound like the actual track field, so you shouldn't add "the", unless you are talking about the running field. (This is based on my institutions, I'm not 100% sure. I think it has something to do about the definite article.)
I don't really understand the 2nd question. When you use "with", it means that it is accompanying something. When you use "for", it means to do something for something. Eg. I play the violin for the school choir, Jack sang with me.