The government has started a new road safety campaign in order to reduce the number of road __________1/50Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. (Chọn đáp án đúng cho từng câu hỏi dưới đây.) 1. The government has started a new road safety campaign in order to reduce the number of road __________. signsstreetsaccidentsusersGiải thíchĐáp án đúng là: C