I went to an aquarium yesterday.

Yesterday, I went to an aquarium. This aquarium was in Tokyo.
There were so many fishes and animals like penguins and seals. Out of all the animals, I liked the piraruku the most. The Piraruku is a big fish. I was impressed by it's size.
I liked the aquarium. There are so many aquariums aroud my home. I want to go the other aquariums someday.

I went to an aquarium yesterday.

Yesterday, I went to an aquarium. This aquarium was in Tokyo.
There were so many fish and animals like penguins or and seals.
Which I liked was the piraruku best. The piraruku is so such a big fish. I was impressed by it's size.
I like an the aquarium. There are so many aquariums aroud my home. I want to go the other aquariums someday.

Great job! よくできました!

I went to aquarium yesterday.

Yesterday, I went to an aquarium. This aquarium was (is located) in Tokyo.
There were so many fish and animals like penguins or seals.
Which I liked most was (The most one I liked was) piraruku. Piraruku is so big fish. I was impressed by it's size.
I like an (-) aquarium. There are so many aquarium(s) aroud my home. I want to go the other aquarium(s) someday (other days).