2) I'm already brought (вроде так)
3) I will bring next week
4) I brought last year
5) I brought this month
6) I brought an hour ago
7) не знаю
8) I brought at 3 yesterday
9) I brought in 2000
10) I'm often bring

2 already - I have already brought a book .
3 Next week - I will bring a book next week .
4 last year - I brought a book last year .
5 this month - I have brought a book this month.
6 an hour ago- I brought a book an hour ago
7 since - I have been bringing a book since Monday.
8 at 3 o'clock yesterday I was bringing a book at 3 o'clock yesterday.
9 in 2000- I brought a book in 2000.
10 often - I often bring a book.