I asked this question on a different site but I didn't get an answer. Could you tell me what use of present simple this is?
They come to dinner tonight.
Is this a situation that often or regularly happen or is it a part of a scheduled event?
I think I could use 'they are coming,' 'they are going to come,' 'they will come' too, but not 'they will be coming' if I am right. Some online test are really confusing.