判断下面句子中的冠词用的是否正确、如不对、将其圈出并改正、

问题描述:

判断下面句子中的冠词用的是否正确、如不对、将其圈出并改正、
long,long ago,there was the hill.and there was a old man living there .
I can see a dog .A dog is yellow.
---where is the bag?---it's under the bed.
I have two bikes .One is new .An other is old.
my vase is here.where is the your one?

there was the hill中 the变a,A dog is yellow.中a变the,An other is old.中An变the,where is the your one中the去掉