Downturn: refers to economic depression, recession, and depression. Which of the following are "slumped":. ['A shopping mall has not been open for a long time, and the proportion of employees changing jobs is high.', 'A restaurant in Beijing only sells one table of dishes per day. Diners must book in advance—monthly.', 'Miaoqiao clothing market was originally crowded, and in the past year, Menkeluoque.', 'After adopting the customer membership system, the number of customers in beauty shops has begun to increase.']