I think it's really stupid that production companies ask you to submit the first 10 pages of a script. The best episode of my sitcom is written so that you have to see it all to understand the jokes earlier on.....it's kind of seeing the day through different characters POV, so there are gaps in the story and jokes that don't make sense till later on (if that makes sense)....
But if I sent the first 10 pages of that script off, they wouldn't understand it. How would I get around that? Just send off a different episode?