THERE IS A LOT OF：singular vs plural - "There is a lot " vs. "There are lot" -

there is a lot of   tears on a withered flower "There is a lot of" and "There are a lot of" are both legitimate terms, depending on whether the noun is countable or not. For example: There are a lot of cars

in many countries there is a widespread existing or happening in many places and/or among many people: There are reports of widespread flooding in northern France. Malnutrition in the region is widespread - affecting up to 78 percent of children under five years old

therefore THEREFORE - dịch sang tiếng Việt với Từ điển tiếng Anh-Việt - Cambridge Dictionary