Are the verbs in the sentences OK? Correct them if necessary (verbs are highlighted in LARGE FONT).

3.I HAVE WASHED all the clothes.Everything is clean.
4.Vicky HAS BOUGHT some clothes yesterday.
5.I HAVE DECIDED to try to learn English.
6.Last year I'VE DECIDED to try to learn Japanese.
7.The weather HASN'T BEEN good last weekend.
8.Steve's grandmother HAS DIED six month ago.