英语句子改错How long has this factory been opened?He has gone to B

1.How long has this factory been opened?
opened错,应该是open.
2.He has gone to Beijing twice.
gone错,应该是been.
3.It is the first time that he came here.
came错,应该是is coming.
4.He has just now finished the work.
just now 错,应该是just.
5.He hasn't finished the work aleady.
aleady错,应该是yet
6.He has bought the book for two days.
bought错,应该是keep.
7.Tom has borrowed the dictionary since five days ago.
borrowed错,应该是had.
8.He has got married to her for ten years.
got错,应该是been.