To create a logical text, here’s the correct order of the sentences and the blank filled in:

1. **C**: As a young boy, Tom was shy and had difficulty in finding friends although he really enjoyed taking part in school plays.
2. **A**: After graduation, he went to New York to look for work.
3. **B**: He was finally offered a part in a film and quickly became successful in acting career.

So, the complete text is:
"Tom Cruise is one of the most successful actors in cinema history. However, life hasn't always been easy for him. As a young boy, Tom was shy and had difficulty in finding friends although he really enjoyed taking part in school plays. After graduation, he went to New York to look for work. He was finally offered a part in a film and quickly became successful in acting career."

For question 18, the most appropriate sentence to conclude the text is:
**B**: Today, Tom still appears in films and is as popular as ever with his thousands of fans from all around the world.