The most natural English would actually be, "What day is it today?".

The best way I do this is just not care about what other people think…It's easier said than done, but it will help you become more confident, and also a better speaker in any language.

Yes, but in a very casual way. If you were speaking to an important client or your manager, you wouldn't say "I have to dash".

Yes, "thinking over" can be synonymous to those other words. The only thing I'd say is that "thinking over" can be a more formal version of "I'll think about it".

True Love

I just read a story in the newspaper and it's impressed me so much so that I want to share it to with friends here. An 85-years-old man in Hunan Province is writing daily love letters to his wife,who's in a coma. She's been in intensive care for more than twenty days after because of a heart attack. He asked nurses to read his letters to his wife to keep her company. Also he sketches a picture of her on every letter he writes,but the his bad eyes keep him from not drawing well. In one letter, he said to his wife like this, "I cherish every single day, we 've been through so many hard days together with both tears and joy. The whole family needs you and we cheer for you, please wake up! " the letters were posted online by one of the nurses who witnessed their love, and soon, thousands reposted it.
It's impressed me so much, and I believe this is true love!

Say, "You're welcome a billion!". Just kidding, don't say that. A very polite way of responding to this would be to say, "You're welcome, I hope you had a good one!" or "Anytime, I hope you had fun!". There are many things you can say. "Thanks a million" is just basically saying "thank you very much".

"Assume" and "presume" have a similar meaning. They both mean that you think something will happen, before it actually happens. The difference is that "assume" means to believe something without any proof. Ex. "I assume that my girlfriends dad won't like me." or "I presume that I will be working overtime tonight. (Because you worked overtime everyday for the past week)" Suppose is usually concluding a thought or act. It's usually an act of agreement or sometimes synonymous to "I guess". Ex. "I suppose we can go watch a movie". - (I guess we can go watch a movie) I hope this helps!

A couple is describing "2" of a certain thing. Sometimes it can be more than 2, but a small amount. I want a "couple" of donuts. That "couple" is cute (Boyfriend/Girlfriend). A pair is describing something that comes in "2". Some words use "pair" even if it's one item though. I will a buy a "pair" of socks (socks come in 2, usually we don't buy 1 sock). That's a nice "pair" of shoes! Ex. of using "pair" with one item: Bring a "pair" of shorts to the swimming pool.