The old astronomer patiently made his _______________ and wrote down what he saw. (OBSERVE)Đoạn văn172/214The 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