Peter is busy _ _ at school, but he never forgets _ __ exercise every day.
A. working; doing B. working; to do C. at work; doing
It is not so _ _ as yesterday, so there are people sitting in the square.
A. cold; fewerB. warm; more C. cold; more
You __ _ cross the road when the traffic lights are red. It’s dangerous.
A. needn’t B. may not C. mustn’t
--- Is this kite _ __, Tom?
--- Yes, it’s mine. It is made by __ _.
A. yours; myself B. mine; myself C. ours; himself
--- Are your shoes expensive? --- No, I only _ __ five dollars on them.
A. used B. cost C. spent
Most students like the teachers _________can understand them well.
A. who B. when C, what
