The frog brew and brew. "Pop!" At last he died because ______________

1. he blew himself up too much.
2. he tried to make his belly bigger and bigger.
3. because he wanted to get bigger than the ox.
4. he puffed himself up too much.
5. his belly burst.
6. he wanted to be as big as the ox.
7. ____________________
[Are the clauses all suitable? Do you have some more expressions? Thank you.]

Did he brew or did he grow? All the clauses are suitable. Was he an animal or a pot of coffee?

Reed is right. Your first sentence should be, “The frog grew and grew.”

The frog blew and blew. "Pop!" At last he died because ______________

1. he blew himself up too much.
2. he tried to make his belly bigger and bigger.
3. because he wanted to get bigger than the ox.
4. he puffed himself up too much.
5. his belly burst.
6. he wanted to be as big as the ox.
7. ____________________
[Are the clauses all suitable? Do you have some more expressions? Thank you.]

The verbs in the sentence before #1 still need to be "grew and grew" instead of "blew and blew."

The clauses provided are all suitable to explain why the frog died. However, if you are looking for other expressions to describe the cause of the frog's death, here are a few additional options:

8. he overinflated his body.
9. his inflated belly reached its limit.
10. he exceeded his body's capacity by blowing.
11. he pushed his body too far with his breathing.
12. he suffered from an extreme case of inflation.

Feel free to choose any of these expressions that fit the context of your story or preference.