She often ___________ her parents do housework at home.
The sentence structure of “I saw him run into the building” is____________.
--- I phoned you at six yesterday afternoon, but nobody answered.--- Oh, I __________a walk with my parents near the river.
--- Now lots of teenagers spend a lot of time playing computer games.--- Yes. Teachers and their parents should prevent them ___________ too much.
--- What do you think of the fish? --- It looks __________,but tastes__________.
--- Where will 2014 Youth Olympic Games __________? — In Nanjing.