单词分类。（每题 1分，共10分）
根据句子的意思，从下面的方框里选出可以填入句子中的单词。

A. calling     B. often       C. monkey    D. scientific   E. improve F. fantastic    G. develop     H. helping     I. lion      J. usually

The___________/___________is my favourite animal.
Thank you for___________/___________me.
They___________/___________play basketball after school.
The invention is very___________/___________.
I’m working hard to___________/___________my English listening skill.