Explanation:
1. substitution: ~ substitution. ~ do it. ~ pin。 ~ sequence. ~ table.
2. The periods in history: when ~. The world ~ ancient times ~. Near ~. Now ~ when (d ā ng) ~. Year ~
3. Descendants: Next.
4. Last name.
Make sentences:
He paid a high price for his career.
2. A name is just a code name for a person or a thing.
Uncle Zhang entrusted a lawyer to represent the lawsuit.
4. Exercise can replace drugs, but not all drugs can replace exercise.
During the revolutionary war, heroes came forth in large numbers.