Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

Q: Question: Possible Duplicate: "Did it close" vs "Has it closed"? As a English non-native speaker it is difficult for me to understand when I must use present perfect or past simple because in my official language there isn't the present perfect tense. I know that present perfect is related to something that happened in the past but its result is important now. But for instance: The message has been sent. The message was sent. Please help me point me out any examples/contexts where I should use 1. instead of 2. 
Answer: 1 means that the action happened just now. You would typically see it in your e-mail program just after you send an e-mail. Your program might give you this message to let you know that the message you just sent has indeed been sent. 2 refers to something that happened at some time in the past. It could have been an hour ago, a day ago, or even a century ago! But it wasn't just now.

A: yes
****
Q: Question: Possible Duplicate: Which is correct to say: "It's me" or "It's I"? Tonight I watched a movie (The Gospel of John) in which Jesus said (as quoted from the written Gospel of John), "It is I." How does this expression differ from "It is me?" 
Answer: "It is me" is ungrammatical. Transitive verbs, like speak take a subject and an object. Thus, You (subject) will speak to me. (object) The verb to be is not transitive, but copular. It takes a subject and predicate. Thus, It (subject) is I. (predicate) Also, it must be We'll soon find out who (subject) is who (predicate.) rather than We'll soon find out who (subject) is whom (object.) Edit: Please see @krubo's excellent answer below. Edit: RegDwight is right that "It is I" is very formal for speech, and few people talk like this anymore.

A: no
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Q: Question: Possible Duplicate: When do I use "I" instead of "me?" A friend of mine asked me for advice about an e-mail he was writing. There was a sentence like this: I and my partners we are interested in investing in your product. I figured it was wrong, so I suggested: I and my partners are interested in investing in your product. This looks grammatical to me but sounds strange. Also, I have seen a lot of people writing this: Me and my partners we are interested in investing in your product. which I believe is not grammatical. So, which one of the options above is correct? Also, what would be a better choice of words? 
Answer: I was always taught that you should always put yourself last, which means the correct grammar here is none of your options, but instead it should be: Someone and I are interested in investing in your product. The options including "we" are not correct - that structure just doesn't make sense here.

A:
no
****