there are a lot of there has been a big change in the roles 'There are a lot of' is used when referring to a plural noun, while 'There is a lot of' is used when referring to a singular noun. The choice between 'are' and 'is' depends on the number of the noun being described
there is a steady of young → There was _____. Đáp án: 1. There has been a dramatic rise in the migration of young people to big cities. Đã có sự tăng mạnh mẽ trong việc di chuyển của người trẻ đến các thành phố lớn. 2. Due to shortages of jobs, the population in rural areas has decreased in the last 10 years
therefore Learn the meaning and usage of the word therefore in English with examples from the Cambridge Dictionary. Therefore is an adverb that means as a result or for that reason