Choose the letter A, B, C or D to complete the sentences with given wordsCâu hỏi The reporter/ wanted/ know/ why/ I/ not/ taken/ a picture/ when/ I/ had seen. the UFO. A. The reporter wanted know why I hadn’t taken a picture when I had seen the UFO. B. The reporter wanted know why I didn’t taken a picture when I had seen the UFO. C. The reporter wanted to know why I hadn’t taken a picture when I had seen the UFO. D. The reporter wanted to know why I didn’t taken a picture when I had seen the UFO.