_____ has already been pointed out , grammar is not a set of dead rules.
举一反三
- The direction of the acceleration(加速度), as has been pointed out, is the same as that of the change in velocity.
- ______has been pointed out before, air pollution is becoming serious in cities. A: That B: What C: Which D: As
- A new school has been _____there. A: set out B: set off C: set up D: set down
- His grandma ______ for 5 years. A: has dead B: has died C: has been dead D: has been died
- A cost that has already been paid, or the liability to pay has already been incurred, is a(n):