Number one in a sentence

The first sentence is as follows:

1. He is the first Chinese to fly a spacecraft into space.

2. He got first place in the final exam.

3. I'm sorry, I can't be with you today, but you have to remember that I will miss you. I will come to you as soon as I finish my work.

4. He got first place in the exam and he went home proudly.

5. He originally wanted to take the first place in the exam, but it backfired.

6. Establish safety first thinking and obey the safety first principle.

7. Li Ming has outstanding eloquence and won the first place in the speech contest.

8. Both methods have their own advantages and disadvantages, but comparatively speaking, the advantages of the first method outweigh the disadvantages.

9. Xiao Ming was a little nervous when he gave a speech on stage for the first time.

10. In this exam, he unexpectedly came first.

11. Xiaolin tried his best and won the first place in the 800-meter race.

12. When I first met my cousin, she seemed a little shy.

13. My sister is applying for college, and her first choice is Northeast Normal University.

14. It was his first time to participate in the World Series, so he was a little nervous.

15. At that time, Mao Zedong led the Red Army to create the first revolutionary base in Jinggangshan.

16. Retreating modestly is the first way to protect yourself. Peace is the first way to deal with things. Tolerance is the first way to treat others. Tranquility is the first way to nourish the mind.

17. It was my first time to stand on the podium. I was nervous and excited at the same time.

18. This is the first time in my life that I have seen such a beautiful piece of art.

19. A large slogan "A century-old plan, quality first" was hung on the construction site.