peut-être!

In -USA- we generally pronounce 'neither' with a long sound like [neether].

"Where were you?" = "Where were you at a specific point in time (in the past)?" "Where have you been?" = "Where were you over a period of time (in the past)?" Also they are often interchangeable. For example: if I come home late, my parents might ask "Where were you?" to ask if I was spending time somewhere I shouldn't have been, and why I didn't come home instead. And They might ask "Where have you been?" if they were angry that I was gone so long, and also to ask what I was doing, where I was.

here you can see some of them. http://www.perfect-english-grammar.com/support-files/stative-verbs-list.pdf

Hmm,well..it depends on the circumstances.here you should say ''I know''.

They're all have very similar meanings and can often be used in the same situations. ''Would'' expresses that an activity was routine, typical behavior, frequently repeated. ''Used to'' expresses that an activity was a past habit, it occurred at an earlier stage of life but not now. It focuses on the habit, not duration or frequency.