Bill is good at playing football in our town.

A．There is no hope for the man.
B．The man’s hard work has no result.
C．The man should have failed.
D．The man should have worked harder.

A．I must be careful not to catch cold.
B．I am careful and never catch cold.
C．I’ll take care of the boy who has caught a cold.
D．The boy is very col