Not until then did people know that John _________ important military information to the enemy for a long time.
举一反三
- Not until then did people know that John _________ important military information to the enemy for a long time. A: had been selling B: sold C: would sell D: had sold
- Not until then did people know that he ________ important military information to the enemy for a long time. A: sold B: would sell C: had sold D: had been selling
- ICs have been regarded as the most important invention in the Information Age for a long time.
- By the time I read his new book, I ___________ (know) him for a long time.
- Not until recently did people in our village begin to know something about Internet.