I just changed my mind I just changed my mind from cooking A to cooking B Is it a correct sentence or would you make it correct If I'm wrong? or please let me know another sentences that I would use in this kind of situation. Thanks

I tried hard to fix it up... which one is correct between below sentences? 1. I tried hard to fix it up to go back to where it used to be 2. I tried hard to fix it up to go back to the first condition in which it used to be 3. I tried hard to fix it up into the original (or first) condition please make those correct if they're wrong.

outside the u.s./outside of the u.s./ is there any differences between outside the u.s. and outside of the u.s.? or is one of these wrong?

I am invited / I was invited Let's pretend that yesterday, my friend told me to come to her house to have dinner today. and I would like to inform mom of my being invited to her house. then which one is better? (the party doesn't start yet) I am invited to her house to have dinner with her or I was invited to her house to have dinner with her

Simple Past / Present Perfect t's really confusing to choose the correct tense between simple past and present perfect. Let's assume one situation. every student has to bring his/her own name tag to the class. but today i forgot to bring it. if a professor notices that i'm not with the name tag now, she would ask me 'don't you have your name tag?' then i would say 'yes i have the name tag but i forgot to bring it', right? but is it okay for me to say 'yes i have the name tag but i didn't bring it' or 'yes i have the name tag but i haven't brought it' which one is correct between 'i didn't bring it' and 'i haven't brought it' so confusing to pick up the right tense.

It's been a long time since ... It has been a long time since I have met you. It has been a long time since I met you. It had been a long time since I had met you. What's the difference between these 3 sentences? Thanks in advance :) I always appreciate all of people who would answer my questions helping me improve my english! (by the way, is it the correct sentence?)

I went to bed too late last night, I went to bed too late to wake up early this morning. last night, I went to bed so late that i couldn't wake up early this morning. Do these two sentences make sense? Can anybody make it correct if it doesn't make sense? Also, Can anybody make the following sentence correct? You can see me get embarassed trying to coming up with what to say Thanks in advance!!

Did you decide what to eat? If i'm in a restaurant with my friends now, we need to order food, right? in this situation which one is the correct one? did you decide what to eat? / do you decide what to eat? it's confusing for me to choose a right one between simple present and simple past.

why didn't I ever know that? / why don't i ever know that? If Someone is letting me know an information that i didn't know before and then i am realizing i was mistaken now, which one is more correct between 'why didn't i ever know that?' and 'why don't i ever know that?' in this situation? i think the first one seems close to the correct one.. but to realize that i was mistaken is happening now!! .. Using the second one sounds awkward in this situation? if so, when can i say 'why don't i ever know that?'? it's confused(is it right? or do i need to say "confusing?") for me to choose a right english tense. thanks in advance :)