Will or Will be. Where to use? I have a doubt how to use correctly "will be" and "will" in sentenses. What cases should I use "will be" and when not to use?

I put this sentence in Passive voice: "His device could name steam machine." Is it correct?

I need to explain the person that he is staying from of me and block me a way. How do I say it him politely?

How should I use "IS" correctly? 1) We all know what rubber is. 2) We all know what is rubber. What is difference?

If I say "There is nothing like Love", will it correct?

I talk with person , but suddenly I am starting not to understand him. How do I say correctly: 1) "What have you said" or What did you say"? 2) "Did you understand me" or "Have you understood me?"

Worms are another great bait. Why is "another used in this sentence? I suppose word "other" should use here. As I understand "another" - singular, "other" - plural.

You must give answers for all my questions. Is it correct sentence?

I write answers in questionnaire. How do I say it correctly? 1) I am filling out a form (questionnaire). 2) I am writing data in a form (questionnaire). 3) other variants?