In developing countries, diseases are not the only cause of high death rates. Unhealthy or exhausting work, crowded living conditions, too little food and a (44) diet are also prime causes oĐoạn văn44/60Choose the letter A, B, C or D that best fits each of the blank spaces in the following passage. In developing countries, diseases are not the only cause of high death rates. Unhealthy or exhausting work, crowded living conditions, too little food and a (44)diet are also prime causes of the numbers of deaths. povertypoorlypoorimpoverishGiải thíchC. poor