Look at the sentences. For most sentences we use go to (somewhere)...
I will go to the store.
I will go to the bank.
I will go to the park.

BUT… when you talk about home or shopping, don't use to.
I will go home.
Do not say- I will go to home.
I will go shopping. Do not say-
I will go to shopping.
Now you try…
Use "to" if it is needed or "x" if nothing is needed.
Karen needed to go _____ class. But she decided to go ____ shopping instead. So first she went _____ the bank to get money. Next she went _____ a restaurant. Then she went _____ a huge shopping mall where she bought a new sweater and a hat. After that she decided to go ____ the supermarket go get some groceries. At the end of the day, she was tired, so she went _____ home and fell asleep.
Answers
Karen needed to go to class. But she decided to go (X) shopping instead. So first she went to a restaurant. Then she went to a huge shopping mall where she bought a new sweater and a hat. After that she decided to go to the supermarket to get some groceries. At the end of the day she was tired, so she went (X) home and fell asleep.