The title of chapter 1 “Down the Rabbit-Hole” has become a popular term for ?
举一反三
- Nowadays, the Internet has become so popular that we are 1) ____
- Winter-swimming has become popular in Beijing because _______.
- Dragon boat racing has become a very popular sport.
- Why has techno music become so popular in Europe?
- It is said that online shopping has become (popular) _______than traditional shopping.