Mark 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 __________.
Giải bởi Vietjack
Đáp án đúng là: C
Hydro and nuclear power are renewable and__________. They can generate a great deal of energy.
