Read the following passage and mark the letter

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word
or phrase that best fits each of the numbered blanks.
Thomas Edison was born (33)
February 11th, 1847 in Milan, Ohio. When he was at school, his
teacher considered him to be a slow student. Because of hearing problems, Edison had (34)
in following
the lessons. But with only three months of formal education he became one of the (35)
inventors and
industrial leaders in history.
he invented the photograph,
Edison's most famous invention was the electric light bulb. (36)
and made improvements to the telegraph, telephone and motion picture technology.
Edison had a special life. He married twice with five children. He loved books, had excellent memory, and
always showed curiosity and science.
Although he had hearing problems, he refused to have an operation for his deafness. He said that silence
helped him concentrate. He always worked very hard and had only four hours of sleep everyday. When he (37)
on October 18th, 1931, he was still working on his new ideas.
C. at
B. in
B. difficulty
B. great
B. However
B. retired
33. A. on
34. A. difficult
35. A. more great
36. A. Moreover
37. A. was
C. difficully
C. greater
C.
Therefore
C. died
D. to
D. difficulting
D. greatest
D. For example
D. lied