www.m-w.com lists "statuses". I have never come across "statii".

I don't know how to do this, or if it's even possible. My first instinct is to avoid it as if it were made out of plutonium. The trouble with making things in quotes possessive ('s) is that many people (like me) will miss the '. Besides, even

It is always correct to use the Oxford comma. I would argue that it is even more correct than omitting it. At any rate, it is definitly much clearer. The two spaces "rule" seems to be obsolete. One, two take your pick. Lynch has more info.

Yikes. If you're taking tests like that, I'd say you're virtually fluent. Is it TOEFL?

We use them both. The brain is the actual physical object. The mind is the brain functioning. In English I can say, "change my mind," to say that I want to change a decision I've previously made. But if I say, "change my brain," we're going

"They" refers to those that have the children: the parents. It seems clear to me.

There seems to be a subtle difference. a) SBs have been put into applications that benefit human kind. I.e. powering a city bus. b) SBs have gotten past theory; a working prototype has been made.

Brain - The lump of organic matter. A doctor would say, "Ahh! Nurse! Don't put the needle so close to his brain." Mind - Perception, memory, thought...Things that are not known to be physical. You might say, "he put a strange idea into my

I don't know of any grammar rule for this. Maybe someone else does. Besides, if there were a grammar rule, you'd have to trust that everyone followed it. Trusting a buliding contractor or furniture salesperson to follow an obscure rule of grammar

You should not use colons here because the clauses coming before the colons are incomplete. As far as I know, the verb coming before a colon must have a direct object. Commas are correct in both your sentences.