At first I didn't recognize Miss Johnson because she______ at least fifty pounds.

A．City people have often to walk to local supermarkets.
B．People living in small apartment buildings often walk down and up stairs.
C．Country people often drive to work instead of walking.
D．Country people live near supermarkets, so they don't have to drive there.

A．A solid foundation in mathematics and Asian culture.
B．Hard work and intelligence inherited from their parents.
C．Great help and a limited knowledge of English.
D．Asian culture and American educational system