In 1946, the first _____ was invented by Dr. Mauchly and his student Eckert in America.
举一反三
- When was the first bicycle invented The first bicycle was invented .
- Do you remember ____(introduce) Prof. Smith to Dr. Lee during his first visit
- 1. An America student will have twelve years for his primary education and secondary education.
- Do you remember (introduce) Prof. Smith to Dr. Lee during his first visit to China?
- They will go to America next month. That will be the first time that they ______ America. A: will visit B: had visited C: will have visited D: have visited