单项选择题
A.Few of them can live long. B.Few of them get along well with each other. C.Most of them live a normal life. D.Most of them differ in their likes and dislikes.
A.There was no garbage left to clean up. B.There was more garbage than before and they had to work harder. C.The fiver had become so clean that a lot of water-birds came back. D.The river was much cleaner and they had to search for garbage.
A.Lose weight. B.Quit smoking. C.Weight himself frequently. D.Have a talk with the doctor.