The old astronomer patiently made his ____________ and wrote down what he saw. (OBSERVE)Đoạn văn380/500The old astronomer patiently made his __________ and wrote down what he saw. (OBSERVE)Click vào chỗ trống để nhập đáp án. Nhấn Enter để xác nhận, Esc để hủy.Giải thíchobservations