1. There are four kinds of stick food in the passage on this page. Can you name the kinds of stick food?

- They are meat sticks, fruit sticks, insect sticks, and even starfish sticks.

2. What kinds of stick food can you find on Wangfujing Street?
- We can find all kinds of stick food there.

3. Can you say some of the stick food to us?
- Yes, I can. They are meat, fruit, insect, and even starfish sticks.

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Are they all gramatical? Is it better for me to delete 'even'?

Yes, all are grammatical. The word "even" is not necessary, but does make it clear that starfish sticks are unusual. It's quite "okay" to use it.

All three statements are grammatically correct. However, removing the word "even" from the last two statements would make them more concise and eliminate repetition. Here are the revised statements:

1. There are four kinds of stick food in the passage on this page. The kinds of stick food are meat sticks, fruit sticks, insect sticks, and starfish sticks.

2. What kinds of stick food can you find on Wangfujing Street? You can find all kinds of stick food there.

3. Can you name some stick food for us? Yes, I can. They are meat, fruit, insect, and starfish sticks.