1. Look! Jack and his monkey flying disk together in the garden.
A. is playing B. was playing C. are playing D. were playing
2. --- Do you know the boy over there?
--- Sure. I him for two years.
A. will know B. knew C. known D. have known
3. --- How often your school sports meeting ?
--- Every two years.
A. were; held B. are; held C. was; held D. is; held
