Elon Musk is a visionary entrepreneur who has made a significant impact on technology and space exploration. Although he has U.S. citizenship, few people know that (18)________.  (19) _________, he moved to the United States to pursue his education and career in technology. After founding Zip2 and selling it, he co-founded X.com, which eventually became PayPal. Musk’s true passion, however, lay in space and renewable energy, (20)_________.
Musk’s work with SpaceX has been revolutionary, and the company has developed reusable rockets which is now the famous achievement in the aerospace industry. Additionally, Tesla has changed the world’s view on electric vehicles and sustainable energy. (21)__________ like the Hyperloop and Neuralink. His vision is to make humanity a multi-planetary species by colonizing Mars, which he hopes to achieve within this century.
Inevitably, Musk has faced many challenges, including (22)___________. However, his persistence and determination have earned him global recognition as a pioneer in technology and space. Consequently, Musk’s influence on future generations is undeniable, (23)__________.
Adapted from: Wikipedia
Question 18: A. he was born in South Africa in 1971.
  B. in 1971, Elon Musk born in California.
  C. Elon Musk born in South Africa in 1971.
  D. he was being born in California in 1971.
Question 19: A. When he was 17 years old B. While he was 17 years old
  C. While Musk was being 17 years old D. When Musk was being 17 years old
Question 20: A. that led him to create SpaceX and Tesla Motors.
  B. then inspired him to found SpaceX and Tesla Motors.
  C. what inspired him to found SpaceX and Tesla Motors.
  D. which led him to create SpaceX and Tesla Motors.
Question 21: A. Musk is also known about his ambitious plans
  B. Musk is also known for his ambitious projects
  C. Musk is also famous with his ambitious projects
  D. Musk is also famous of his ambitious plans
Question 22: A. marriage problems and military obstacles.
  B. childhood trauma and cancer diseases.
  C. financial struggles and technical failures. 
  D. resistance war and big achievement.
Question 23: A. so his inventions continue to guide the world
  B. and his innovations continue to shape the world
  C. but his innovations continue to shape the world
  D. or his inventions continue to guide the world