Hello and welcome!
A few comments about your question, though:
1. Please use a specific title for your topics, and post them in appropriate sub-forum. I've moved this to the right one (it's a question about Semantics).
2. We have a strict policy about not answering homework questions. It's your work, for your benefit. Not to mention that other students would find the answers here, and the whole exercise would be pointless.
If you want to ask a question about homework there are two options:
--Post a very specific question about one small part of your assignment, which is beyond the scope of the assignment so that you understand it better. For example, "In my homework we were asked about this sentence, and I know the answer is ___, but I also wanted to know more about this, so can we discuss it in more detail?"
--Ask a very general question about a topic so we can discuss it in general, but not specifically about your homework. For example, here you might ask how modal verbs work or some other general question about them. Or maybe a question about a particular term from your class you don't understand well (epistemic, perhaps).
A clear indication that you are violating the homework policy is if you have to post the whole assignment to ask your question. Then you're not only asking us to do the homework for you but also to figure out how to do it. If you don't know how to even start answering the questions, then you should probably refer back to your textbook or lecture notes-- homework is sometimes meant to be challenging, but you shouldn't feel lost about how to start. Ask your instructor if you need more help. Or start making a list of what you do know and see how it might apply here. I think sometimes students feel overwhelmed by an assignment they think is difficult and stop trying to answer as well as they can for the parts they do understand. Another reasonable option is to talk to friends in the class or form a study group (unless you are explicitly forbidden by the instructor from discussing your assignments). Just don't copy each other's answers!
Now, if you want to ask a question about Semantics in general, you're welcome to.