question: did someone email you a zexp file and you're not sure how to open it? maybe you have found a zexp file on your computer and wondering what it's for? windows might tell you that you can't open it, or in the worst case, you might encounter a zexp file related error message.
Capitalize this past sentence correctly.
A: Did someone email you a ZEXP file and you're not sure how to open it? Maybe you have found a ZEXP file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a ZEXP file related error message.

question: rnw feature : note the use of the category introduction - one of rapidnichewebsites features.
Capitalize this past sentence correctly.
A: RNW Feature : Note the use of the Category Introduction - one of RapidNicheWebsites features.

question: i, ada, have not done the notes very well, but i'll try to do it better tomorrow.
Capitalize this past sentence correctly.
A: I, Ada, have not done the Notes very well, but I'll try to do it better tomorrow.