_____are generally considered to be the oldest machine tools and were developed in the 1750s.
举一反三
- It's generally accepted that the first systematic patent law was developed in Venice.
- It's generally considered unwise to give a child _____he or she wants.
- It's generally considered unwise to give a child he or she wants.
- New Year's Eve ______ the world’s oldest celebration. A: is B: was C: are D: were
- Hamlet, Othello, King Lear, and Macbeth are generally considered to be Shakespeare's four greatest tragedies.