1.请问为什么选B不选A呢?麻烦告诉我原因,

1.请问为什么选B不选A呢?麻烦告诉我原因,
The rest of the food ____ wasted.so next time you ___ order so much food in a restaurant.
A:is; won't B:is ; shouldn't C:are won't D:are; shouldn't
2.(请问ABC这三个词有什么区别?)Don't take so much ___.YOur grandma is sleeping.
A:sound B:noise C:voice D:Pronunciation