用大小单双的方法组六必中方法简介：A young man in ragged clothes was talking. In the middle of his speech, as if to prove something, he started coughing heavily again. Cough to the emotional point, as if the bronchus is hanging on the roof of the mouth.
A young man in ragged clothes was talking. In the middle of his speech, as if to prove something, he started coughing heavily again. Cough to the emotional point, as if the bronchus is hanging on the roof of the mouth.
