Complete the passage with items from the box. 在空白处填上合适词汇的选项。
A.
strange
B.
scientist
C.
hard
D.
child
E.
worth Thomas Edison was a famous American 1 . When he was a 2 , he liked to find out how things worked. He was in school for only three months. He asked his teacher a lot of 3 questions. Most of them had nothing to do with his lessons. The teacher thought the boy was not bright and was not 4 teaching. Nevertheless, n o matter how 5 it was, Edison never gave up.