1. ——Look, there is a lot of litter in the river.
——Yes, it’s said that 80 per cent of fish in this river ________ live long.
A. doesn’t B. don’t C. isn’t D. aren’t
2. ——Is she a hard-working student?
——Yes, she is. She studies ______. She is also good at PE. She runs very______.
A. hardly; fastly B. hard; fast C. hardly; fast D. hard; fastly
3. ——Now lots of teenagers spend a lot of time playing computer games.
——Yes. Teachers and their parents should prevent them ______________ too much.
A. to play B. play C. plays D. playing
