When the traffic lights are red, we _______ stop.
the team finished most of their research work?—Yes, but the rest rather difficult.
Nowadays action movies aren’t as ________ as cartoons among teenagers.
He slipped and broke his leg. _________, he will have to be away from school for two or three months.
John rode to the park just now, but now he _____. Can’t you see him in his bedroom?