Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences given.Câu hỏi There are some ways to help reduce global warming. Cutting down energy use is one of them. A. Cutting down energy use is the only way to reduce global warming. B. Global warming is among many ways to cut down energy use. C. Helping reduce global warming is a way to cut down energy use. D. Cutting down energy use is one of the ways to reduce global warming.