1. Can you find something sweet?

Yes. Here is a sweet cake.

2. Can you find something red?
Yes. Here is a red shirt.

3. Can you find something cold?
Yes. Here is a (X) cold strawberry juice.

4. Can you find something expensive?
Yes. Here is an expensive electric guitar.

5. Can you find something fresh?
Yes. Here is a(X) fresh salad.

(Are the expressins all grammatical? Would you like to check them, please? What about the use of the article?)

2 answers

All are correct -- including your articles. :-)
on #3. We more often say..." Here is some cold strawberry juice." Juice is considered plural....unless you use the term " a glass of juice".