That tree looked as if it____________ for a long time.
举一反三
- He looked as if he （ ） ill for a long time.
- We _____ out by that time that he ____ a thief for a long time.
- It (be) ____ a long time since we met last time.
- By the time I read his new book, I ___________ (know) him for a long time.
- Because ‘99’ and ‘for a long time’ are the same in Chinese pronunciation, they both have the meaning of a short time.