用所给单词的正确行使填空the girl is young but she starts to learn _ hers

用所给单词的正确行使填空
the girl is young but she starts to learn _ herself with her mother's help .(dress)
it was ____-for me to run so long before.after a lot of exercise .it is ___now(possible)
after talking with that ________many students are interested in ______.(science)