Give the correct parts of speech for the words underlined in bold.

buy
The word "buy" is the infinitive form of the verb showing purpose.
$\boxed{verb}$

but
The word "but" joins two clauses showing contrast.
$\boxed{conjunction}$

better
The word "better" compares the degree of liking (modifies "likes").
$\boxed{adverb}$

quickly
The word "quickly" describes how the girl was dancing (modifies "dancing").
$\boxed{adverb}$

she
The word "she" is the subject referring to a female person.
$\boxed{pronoun}$

bit
The word "bit" is the past tense action done by the snake.
$\boxed{verb}$