Can I use these interchangeably? I'm going to buy some things, and if I ask; How much is it altogether? How much is everything?

Worte für jeden Tag!/Words for every day! 🇩🇪🇬🇧

Sorry to disturb great native English speakers. Queries about eight real sentences with modal verbs. 1a. You can take the car if you want. 1b. You may take the car if you want. 2a. Can I borrow your pen for a moment? Yes you can. No you can't. 2b. May I borrow your pen for a moment? Yes, you may. No, you may not. 3. May I play ball this morning? No, you cannot, but you may play this afternoon. 4a. Could I use your phone? Yes, of course you can. (Not: Of course you could.) 4b. Might I use your phone? Yes, of course you may. (Not: Of course you might) 5a. Can you open the door? Yes, certainly. or I'm sorry I can't. 5b. May you open the door? Yes, certainly. or I'm sorry I can't. 6a Can I ask a question? 6b. May I ask a question? 6c. Could I ask a question? 6d. Might I ask a question? 7a. He must be tired now. 7b. He may be be tired now. 7c. He might be tired now. 7d. He could be tired now. 7e. He should be tired now. 8a. She must have missed the train. 8b. She may have missed the train. 8c. She might have missed the train. 8d. She could have missed the train. 8e. She should have missed the train. Question: ① I guess that the meanings of each group are almost the same, but their (the group) tones are different, Is my guess correct? ② Does every group have the same meaning? ③ Is each group grammatically correct? or, Which is/are grammatical correct?

a ukrainian friend told me that they celebrate Easter by making paska and Pysanky. and for the Palm Sundays they don't have palm trees in Ukraine so they use Willow instead. is interesting to see how people celebrate Easter in different countries. and she inspired me to make a paska myself anyways I need to eat why don't I make something new.

Future Perfect Continuous (Future Perfect Progressive)

What do you call this in Swahili? 🍉

Future Perfect Continuous (Future Perfect Progressive)

Throughout the whole humans history, there were some great inventions that deeply promoted the process of the history, such as papaer, electricity, computer,etc... Among them, one invention isreally hard to create due to its complex structure. It's the stepper that makes NM level chips which can be used in smart phones, tablets and other electronic devices. Without that tiny thing, the world won't work anymore. When we see a hair, we usually think that it's really thin. In fact, you can put over 200 hunderd components in a chip which is as large as a tiny hair. A stepper is the machine that can produce the chips. Only one company in the world can make the chips under 7 NM. I really cn't imagine that who was the guy invented this kind of machines. We always look up to the deep space and send rocket to the Moon, even the Mars. When we look down the tiny world and carefully observe it, it's also wonderful.