根据所给英文写出单词的合适形式，每空一词。
She wants to be ________ (health), so she usually does exercise.
Mr Wu teaches ________ (they) Chinese this year.
Are the students _________(interest) in the history of China?
My mother never gives me _______(some) pocket money but my father does.
Of all the festivals ,children like Halloween __________(good).