There is a lot of/ lots of bread 为什么是is

There is a lot of/ lots of bread 为什么是is 我想表达很多食物.到底是there are lots of foods?还是there is a lot of food There is ( )rice in the bag.A.lot B.many C.a lot D.lots of there is a lot of 是a lot of exercises ,还是lots of exercise?为什么?lots of和a lot of There is only a piece of bread There are lots of …… There is a lot of…… 分别用are is there are a lot of/There is a lot of? there is a lot of bread on the table.改否定 是there are a lot of people、还是there is a lot of people? 是 there is a lot of people 对还是 there are a lot of people 对 是 there are a lot of还是 there is a lot of