You don't need any other word in that statement. "No, I will finish it in ten minutes." You could say, "No, I'll finish it in another ten minutes", but the word "another" becomes redundant.

1) (C) At first you may find it odd that "another" is used before 10, as you would expect it to be used with the singular form. However, 'another' can be used before a plural noun when there is a number before that noun. Example": I've already spent 100 dollars in the Casino, and I'm afraid I'll spend another 50 tonight. 2 (B) This is a little trickier. 'The others' usually refers to 'The other people'. Since it seems like Mary is talking about THINGS (not people), I would choose the pronoun 'others', without 'the'. Hope it was helpful! ;)

2. Others or another work. Others implies there she would like to see several options. Another implies only one more option can be seen or she only wants to see one more.