one day my mother asked me to buy some cakes and meat.when I got to the cake shop,it__(begin)to rain.and I found the cake shop___(close).So I had to ___(run)to the meat shop in the rain.but when I asked for 1 kilo of meat,the boss told me that all of the meat____(sell)out.Finally I got home with nothing,and I was all wet.It was really a bad day!麻烦用所给词的正确形式填空.
had begun had been closed（发现的时候已经关了，它又是被关） run had sold(had been sold它应该是被关) 因为刚刚学了故去完成时及被动语态 以上填法对吗？为什么？