英语问题。麻烦各位进来看看。谢谢了。

For the 1st question:
One time I lost my necklace in a park, and I felt worried since it was a birthday gift from my grandma. Eventually I went home without my necklace, however, I found out my necklace was in my pocket!

For translations:
I think my dog may have gone to the riverside.
I think your dog may have gone to the candy store.
Let's go get some help from the police.

第一问略

I think my dog may have gone across the river.
I think your dog may have gone to a candy shop.
Let's ask police for help.

I thought I the dog possibly went to the riverside.
I thought you the dog possibly went to the candy store.
We ask the police to help.

I thought my dog might have gone to the river side
I thought your dog miaht have gone to candy shop
We go and get police to help up