How many years had Rip been asleep?
举一反三
- How many years had Rip been asleep?( ) A: twenty years B: ten years C: fifteen years D: thirty years
- How many years has Lang been playing clarinet?
- How many years has she been married？ She has been married （）.
- How many Americans had been killed by AIDS?
- It was difficult to ________ how many trees had been destroyed.