Our (succeed) ______ and their failure has proved beyond all doubt that our method is far better than theirs.

A．Because immigrants miss their native cuisine.
B．Because immigrants are fond of cooking.
C．Because immigrants hate American food.
D．Because immigrants want to get rich.

A．She is not in the city.
B．She is not able to help.
C．She is a policeman.
D．She is a resident of this city.